What is Slamball?
1.
The name of a really crappy "sport" that imitates basketball but bastardizes it by adding props such as trampolines and is played by a bunch of unathletic hispanics.
Pedro and Juwon won the slamball game 2-1.
2.
The slamming of the male reproductive glands against the forehead of an unsuspecting or sleeping victim.
Collin passed out after drinking only three Zima's, so Cody woke him up with a slamball.
See