buttcorn
(verb) to spit in a partner's anus.
Before engaging in anal sex, Jack will buttcorn Lexi.
Buttcorn Kernel
A Buttcorn Kernel is what describes that itchy feeling in your butt after you thought you had wiped properly earlier but actually did not. It feels almost like there are popcorn kernels in your sphincter; and it sure does itch.
"Damn dude...I got some serious buttcorn kernels right now."
"You should probably find a bathroom and take care of that post haste."
"You should probably find a bathroom and take care of that post haste."