When you're riffing on an idea with someone, and the words are coming so smooth & fluid & satisfying that you feel like you're losing yourself in the soft luscious cavern of their mind. And you kind of just want to stay there forever.
Fiercely kissing your partner or anyone you like (lesbians and gays included). Could involve biting and licking. Normally done while one partner is being pushed against a surface such as a wall or door.