Refers to where a chick gives yer love-pipe a thorough "
inspection" wif her lips and tongue (
apparently not being
satisfied with just looking at it and checking it out with her hands) to ensure dat it's to her liking prior to letting you put it between her legs.
Another benefit of giving a guy an oral exam is dat you can get him to expend his load right before you offer him your vagina, so dat he'll be freshly "pre-drained" and thus you can skip da yucky condom and gleefully savor da feel of his bare
cock rubbing against yer love-tunnel, but won't hafta worry about him releasing any
unexpected ejaculations inside of you and getting you
pregnant.