Mud Mashers
Cum Farters
Anal Explorers
Anal Afficionado
Booty Bombers
Butt Hornet
Rump Rovers
Butt Buccaneers
Rump Pillagers
Tail Marauder
Derrier Fugitave
Ass Skier
Poop Miner
Posterior Plowers
Buttcrack Vikings
Pelvic Privateers
Sailors of the Brown Sea
Nasa Uranus Probes
Invaders of Uranus
Anal Anglers
Poop Movers
Fanny Felons
Moon Explorers
Rump Mafia
Booty Crips
Hershey Highway Hitchikers
Butthole Spleunk
Some of those are great.
Butthole Spelunkers is my favorite one.