A variation on the teabag. A teaball involves 3 people, at least 2 males. Male #1 lowers their balls onto the mouth of Male/Female #2 (who is lying down). Male #3 then tries to hit the balls off using their penis. The activity is similar to that of childhood sport tee-ball, where the balls are the softball, and the penis is the bat.
Dude I was on a teaball speedball last night, it wall like a baby version of coke and heroin. I’ll probably move on to actual coke and heroin soon because it was dope.