look up any word, like blumpkin:
 
1.
A guy who is known for ejaculating more than average volumes of sperm
"Glenn can be fun in bed, but sometimes he's too much of a cummy guy for me!"
by Jack George June 10, 2008
 
2.
1. A guy who is comes a lot, but he can still continue having sex.
2. A guy who comes a lot on his girlfriends stomach/belly.
You're such a cummy guy!
by Jakeline Georgina June 10, 2008