chipmunk cheeks
When a guy blows his load in someones mouth causing their cheeks to fill up and puff out. Looks like a chipmunk with it's cheeks filled with food.
Example:
Guy 1: Man tonight I'm gonna give one of those hot girl's at the bar chipmunk cheeks. Guy 2: Good luck bro!
Guy 1: Man tonight I'm gonna give one of those hot girl's at the bar chipmunk cheeks. Guy 2: Good luck bro!