To describe a type of hard sex, to pump with all ones might, destroying the lettuce.
yo dad is c slammin that girl down church street so hard that her pussy is red af rn
When a girl gives you a blowjob while wearing a beer can baseball helmet and hands you the straws to drink the beer during the act. Bases loaded optional...
It was the bottom of the ninth and I was noticeably depressed because my team was losing. My girl wanted to cheer me up so she loaded two natty lights in her beer helmet and started grand slammin me
Having someone on all fours on a pool table while someone else is using the pool stick to hit the cue so it knocks one of the balls into someone's asshole.
Oh man I was slammin' pool with my homies last night at my parents house, since they are out of town.
Kid 1: Your grandmas dead
Kid 2: cries in pain
Kid 1: I’m just slammin your knobb