Grub on the Chub

V. -To perform oral sex on a chubby-obese Female.

Greg: Dude... I'm not doing it.
Randy: You gotta Grub on the Chub if you want her to keep calling you back, bro.

Grub hub chub rub

When you’re jazzed About your food delivery order, so you wank it while you wait.

Dude I can’t wait for this sushi, it’s giving me grub hub chub rub.

Grub Chub

Getting an erection or being turned on while eating.

Man! These oysters are giving me a Grub Chub