What is Mulberry Bush?
1.
The act of a man shaving off his 'fro and gluing it onto a girl's vagina for cushioning during sex.
Tony: Dude what happened to your hair
Leon: I couldn't take it anymore, it was starting to chafe. Had to sacrifice it for a mulberry bush
See
2.
A slang term for hairy armpits, which originated in forces slang in Germany.
Check the mulberry bush on that (usually a German female)
See