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1.
Third Base with oral action. Giving a blowjob to a guy or eating out a girl. The last base before home plate.
How far did you get? I got a sloppy third
by A. Nonymous November 15, 2003
 
2.
A foursome, with three dudes, and triple pentration.
Yea, I cant believe she handled all of those sloppy thirds. Each third was so sloppy, but together they are sloppy thirds. When one left to use the restroom, it was temporarily sloppy two/thirds.
by the definer. July 05, 2010