The trainers at my gym today all decided to dress up in 80s workout gear: old school running shorts, knee socks, terry-cloth headbands and wristbands in neon colors, and leg warmers. And a sound system pumping out "Eye of the Tiger" every 20 minutes. My trainer went all out and dressed as Richard Simmons, complete with curly wig.
I'm not sure if trying not to bust a gut laughing counts as "ab work" or not.
Today's pushup work, hands elevated on weight bench: 1 set of 5 (First time I've ever done 5 in a row!) 1 set of 4 1 set of 3 1 set of 2