Cupid's toothpaste
Sperm, particularly in a womans mouth
"Bosh bosh, give her both lumps, she was brushing with cupid's toothpaste this morning."
Cupid's toothpaste
The juices splashed in and around the mouth during oral sex.
"Hey man, you have a little something dribbling down your chin."
"Thanks dude, my gf sat on my face this morning and I must have missed some Cupid's toothpaste on the clean up."
"Thanks dude, my gf sat on my face this morning and I must have missed some Cupid's toothpaste on the clean up."