Smug Chug
To slurp a drink loudly and exhale with a smug look on your face. Best done when annoying someone.
Me: I hate hanging out with Bill, he always does the smug chug.
Bill: *ssssssllluuuuurrrp* aaaaaaahhhhhhhhhhhhh *glare*
Bill: *ssssssllluuuuurrrp* aaaaaaahhhhhhhhhhhhh *glare*