"Cherry
Pie," referring to the performing pf cunnilingus on (eating out) a
virgin vagina goes at least as far back as the 1950s. The Doo Wop duo, Marvin and Johnny, sang a song called Cherry Pie in 1954; the lyrics are simple but riddled with sexual innuendo.
Cherry, nah-nah-nah cherry
pie, whoa so good
Sugar, nah-nah-nah sugar plum, sweet as they come
Give me nah-nah-nah give me some cherry, cherry
pie.
I'm going to my girlfriend's house to eat some Cherry
Pie!
Little Jack Horner sat in the corner eating his girlfriend Mary's cherry pie.