The act of flirting. While flirting, it is not uncommon for you to be uncommonly sweet, hence the term caking. Being abnormally sweet to someone you are "interested" in. Normally, said person, is of the opposite sex, but there are occasions when a girl might be caking to or with another girl, as a guy might cake to or with another guy.
1.)Hey, you'll have to do all that caking later, I'm ready to go!
2.)At the block party, Tony was seen caking with every available broad.
3.)How can I trust you, if you're gonna be caking with every chik on the block?