Doing a Vinnie

Doing a Vinnie (formerly known as doing a Houdini): disappearing from where people have gathered to see you/be with you without saying anything to anyone

You're not planning on Doing a Vinnie from the party again are you ... so rude

Mazzing

Masturbating

Gary reckons he was mazzing behind the lounge room curtains for 4 hours while you watched tv.