La La-ing

When you let someone think they've won something for five minutes, then reveal they actually lost.

A: "Did you win an Oscar last night?"
B: "I thought I did, but they were just La La-ing me."

Dip n' Swing

The act of leaving one establishment to visit another before returning to the original location and/or group of friends.

"Where you going, bro?"
"Just gotta dip n' swing, but I'll see you in 20."