This shouldn’t be funny but there you have it.

So, apropos, how is grape juice stereotypical?

not much of a joke.. barcode scaners screw up all the time.. seriously, i’ve had one scan a guys blue shirt and it came up with a tv once. >.>

We dont serve fried chicken and watermelon on a daily basis in my mess hall!

@Damaged  
Eh, this one’s better drawn.

@TheBrianJ  
Jeez, I didn’t even see what was on the screen. Yikes.

Your joke is pretty thin (and quite regional), but the punchline has been done before (and much better).
 

I feel like the joke would have landed so much better if it was just random stuff, rather than going for the cheap “LOL RACISM” shtick.

I shouldn’t laugh at this. I did anyway.

ha, nice one