When you pinch a girl's nipples while you guys are fucking and then you cum in her mouth but you squeeze her nipples really hard so she starts screaming and the cum in her mouth makes it sound like a Chewbacca.
by Simdawgg March 25, 2019
When you walk past guys who eat prunes and watch anime porn and they make eye contact with you and then instantly cum shoots out their dick.
Tova: "Bro, that Asian guy is staring at you"
Simi: *looks up at Asian guy*
Asian guy: has an instantcumshot
Simi: *looks up at Asian guy*
Asian guy: has an instantcumshot
by Simdawgg March 25, 2019