look up any word, like cleveland steamer:
 
5.
" Sleeping with the fishes"

Meaning that someone is dead.
:hey where is sonny?
:He's swtf !
by Glawar September 20, 2007
 
1.
"She Wants to Fuck"

Commonly used to describe women that welcome men between their legs. One can tell that a woman constantly wants to fuck when she not only throws herself upon all those around her, but also make unnecessary sexual references to anything in the area.

To see if a woman is in SWTF mode, simply ask them if they like penis. If they respond with a smile, SWTF. If they don't, politely back away and apologize for the slip of the tongue.
Example 1:
Man #1: Wow, that bitch is really slutty. How many guys has she slept with?

Man #2: None. She is so horny I think she is about to hump that dude's leg. Imma go ask if SWTF.

Example 2:
My little sister's friend walks up to me and randomly gives me a hug. SWTF

Example 3:
Go to Taco Bell. The cashier gives me my change and she brushes my hand. SWTF
by DollaBilly September 18, 2010
 
2.
Seriously, what the fuck
A: We have another test in math today.
B: Seriously what the fuck.

OR

A: We have another test in math today.
B: Seriously? What the fuck?

OR

Spoiledmonkey33: We hav another test in math 2day
Blazedbear4: swtf
by B to the en joe potterr October 14, 2009
 
3.
Slut what the fuck

Said when what the fuck just isn't enough.
Girl:I fucked your best friend.
Guy:SWTF
by SunnyfuckingSadie February 24, 2010
 
4.
Stands For slut what the fuck
what you would say to your girlfriend/wife after cathcing them cheating or just doing something plain disgusting and wrong
Girl"Hunny i ate all your cheetos"
Guy"SWTF!"
by ALEX FUCKING CRUSTY January 27, 2009