clam busting

Oral Sex on a female, so named because of the fishy smell/taste attributed to vaginas

"i busted her clam good, tasted fishy though"
"Dude do you know what Clam busting is?"

clam busting by Osirian January 22, 2008

Clam basting 

When several guys blow there load into the same vagina

Paul and Chris where clam basting the boss so bad it was running down her leg at the 630 meeting.

Clam basting by Clamer July 26, 2016