dirty thirds 

Level AFTER sloppy seconds, after your with, or hookup with someone, they go for another person and shit happens, then eventually you go back to that same first person for more.

ex. ''You got my dirty thirds last nightt, kid xD I hit that ages ago!''

dirty thirds by destinyxdgaf September 14, 2010

Tired Thirds 

Third person to hop on the train.

Greg called shotgun,

Brad called sloppy seconds,
Eh fuck it, i guess ill take tired thirds.

Tired Thirds by Fuckin_Monkey August 5, 2010

throw-up thirds 

what comes after sloppy seconds, usually applies to someone who is of less importance having sex with someone of more questionable sexual values

man look at that nerd,hes getting throw-up thirds from that slut jessica.

throw-up thirds by joshtaco August 20, 2007

Dirty thirds 

When someone "hooks" up with someone after two of his friends have hooked up with them prior to said hook up. The term becomes appropriate after a situation where the term Sloppy seconds suffices. Coined by Bryce aka Gunky.

That girl is you're dirty thirds.

"Dude that girl's so easy. You could totally tap that."
"Wait dude, didn't Plowman and Trash can hook up with her?"
"Yeah, but dude she's so easy."
"Na man,I don't want their dirty thirds."

Dirty thirds by bryce richards April 4, 2008

rule of thirds 

When organising an event on Facebook you can use the rule of thirds to estimate how many people who have said they will or may attend will actually attend.

You can assume that approximately two thirds of those who have said they will attend will turn up, and one third of those who have clicked maybe will turn up.

Bree: Wow, we've got 69 attending and 93 maybes! We better buy some more booze!

Alex: Hold on, by the rule of thirds that's only 77 people, so we're okay with what we've got.

rule of thirds by boykitten June 2, 2011

messy thirds

getting to fuck a chick that both your boy and his boy got to fuck that night

Yo dude...i've got sloppy seconds on that bitch after our bro gets done fucking her...you can get messy thirds after I'm done beating that shit up...

messy thirds by Brian F from Tampa May 7, 2007

Triumphant Thirds 

Being the third person to have sex with another, in succession.

Danny got sloppy seconds and then John had triumphant thirds, tina was very sore.

Triumphant Thirds by smerkis August 25, 2009