This phrase is most commonly used when it's based onoral sex. This can be said by a male or a female.
I'm trying to explain, baby, the best way I can
I melt in your mouth, girl, not in your hand (ha ha)
---50 Cent( fron the song, Candy Shop)
By Iolande
Melts In Your Mouth, Not In Her Clam
Fisting a girl with handful of M&M's and leaving them inside of her. Then having her stand up, over top of you, and push them out dropping into your mouth. Don't wait too long though, or it'll look more like 2 girls 1 cup.