Nothing to see here, just two sisters having a sisterly masturbation session. I’m choosing to believe that this is a regular thing for them, that once a week or so they set aside a few hours to just go out behind the barn and just jack off together for a while. Of course, in this case, it’s possible that Apple Bloom has been saving up all week just so she can show off to her sister just how much semen she’s capable of blasting at once, while AJ has probably ejaculated a few times a day.
 
Alternately, this year’s Sisterhooves Social is one big futa jackoff contest, and they’re practicing, and AJ is just surprised at how seriously Apple Bloom is taking it.

It ain’t incest if you just look, right?

@Megabyte1835  
Muscles are sexy

This would be better if the models werent so muscular in my opinion

@Lucky Shot  
Didn’t realise that, good to know.

@Lucky Shot  
Pfff, as if.
 
Everybody knows pee is stored in the balls.

The testicles (<1% of ejaculatory volume) are the primary source of androgens, chiefly testosterone, which are vital to the development and health of the rest of the male reproductive system, including the prostate (~30% of ejaculatory volume) and seminal vesicles (~70% of ejaculatory volume).
 
A vasectomy does not completely remove the testicles, only their ability to contribute sperm to semen - so the androgen benefits remain. With no testicles at all, reproductive function would plummet rapidly without artificial aid (i.e. steroids.)
 
Also, Bloom cums like a volcano and that is why she is Best Crusader.

10/10 would be jizz target for.

@Background Pony #2264  
size of the loads maybe?

♫ My big sister, best friend forever!  
Like two peas in a pod, we did everything together…♫

Good lord!! She was backed up something awful

Both dudes seem pretty similarly hyper tbh. Not sure where the “size difference” come into play.  
AJ seems like he is the same size as AB, he’s just sitting higher up.  
It does look quite hilarious regardless xD They’re having a real bro-off xP

@Background Pony #F3A5  
Nobody is an idiot, we just learn bullshit.

@Arkadios  
Someone would have to commission him to do that.

You should do those profile images for the CMCs like you did for the Mane 6

@Background Pony #43B6  
sperm =/= cum, genius
 
yeah your balls produce the sperm, that contain the genetic information needed to carry your genes forward
 
your prostate produces the actual liquid, or the cum, which carries the sperm when you ejaculate
 
but thanks for acting like i’m the idiot here, when you’re the one who seem to think that cum is just 100% concentrated genetic information stored in the balls

God damn this was awesome! Fun for the whole family ;3

@Minus  
that’s the frankfurt school system for ya, but that’s a topic for a different thread

@Background Pony #43B6  
I have learnt so much more from Porn sites that I ever did from school, which lied to me and told me sparm was stored in the balls, and that cum is 100% sperm. Amazing to find out it’s only a small portion that’s sperm. Like said above, you don’t even need balls to cum tonnes. I really appreciate it when artists don’t over-size the balls out of thinking they need to for huge cumshots.

@CuteFlame  
No, sweat is stored there

@Background Pony #F3A5  

 
Everyone knows pee is stored in the balls

In other words, you are both wrong, since you could actually cum without balls and all the parts that sit in the scrotum, it wont have sperm though. You ever heard about vasectomy?

@Background Pony #43B6  
Most of the liquid actually comes from the seminal vesicle and the prostate gland and well they mix with some stuff from the cowper’s gland and the sperm from the epididymis.

@Background Pony #F3A5  
>cum isn’t produced by your balls  
 
https://en.wikipedia.org/wiki/Testicle  
The functions of the testes are to produce both sperm and androgens, primarily testosterone.  
anon please your ignorance is showing. had you said sperm isn’t stored in your balls you’d be accurate (it’s stored in the epididymis for the record). larger balls would generally mean faster production of sperm which in turn would require either more frequent orgasms for a shorter refractory period or a larger epididymis for those larger cumshots like applebloom is doing, and both would require either a larger or more efficient prostate to produce the fluid part of semen  

@Background Pony #F3A5  
Not the fluid part at least. But I’m assuming that she isn’t shooting blanks XD