GaGa's BF Pokes Her Face ... With His Tongue

Lady GaGa can't exactly shut her Playboy mouth ... when someone else is exploring the inner confines of it.

media-removed-tmz
Though they were rumored to have split, Stefani Joanne Angelina Germanotta and BF Speedy sucked all sorts of face Wednesday in Hawaii.

BTW -- check out her bathing suit ... even on vaca she's in costume.