Siffy 

The new name for TV's SciFi Channel.

Dude, did you catch the rerun of Battlestar on Siffy last night?

Siffy by mhl2 July 18, 2009

sniffty-nine

when two dogs (or people) are simultaneously sniffing each others' asses. (verb: sniffty-nining).

man, did you see those two bitches sniffty-nine each other? they were going at it hardcore!

sniffty-nine by dan da p-funk August 8, 2006

Sifty Junior 

A male who moaps aruond drunk unsuspecting woman, prying them with alcohol in exchange for sex. This species is an understudy of Sifty Senior, and thus does not have the full array of sifting tactics and approaches as his elder mentor at this time, but will develop these over time.

"Check it out, Sifty Junior is sifting around those Desi girls. He isn't doing the Deluxe Sifty Senior Speical though"

Sifty Junior by Siftster September 7, 2006

sifty 

Dodgy, shifty, suspect. Or as a verb: to lurk in a public place ie a bar or club.

Man, that dude at the bar looks really sifty.
Check out that dude sifting in the corner.

sifty by Gibbonsausage May 16, 2004

sifty 

A very dodgy person indeed. The kind of person who lurks in backgrounds, dodgy eyes, the works...

Look at that sifty bastard over there

sifty by MattyP April 18, 2005

swiffty 

Best guy in the cod trickshotting community can pull of any shot and will succeed in his life
Also Gets the gIRLS

Bro im such a Swiffty

swiffty by TaKn Boi January 12, 2017

Sifty 

When you have a fear of chalk or cannot touch anything with a "chalky" feel like teachers chalk, sidewalk chalk, blackboards, chalkboard erasers or even books that seem to have a "chalky" residue on them. Also, when you cut your finger nails and you cannot touch anything for a certain period of time because your fingers are too sensitive so to say. You may feel "sifty" or have "siftiness" if:
1. you cringe when you touch chalk or chalkboards
2. you cannot touch anything for a certyain period of time after cutting your nails
3. have a larger reaction than most other people when the chalk or chalkboard squeaks
4. if while you were reading this you cringed at anytime

Disclaimer: If you have "siftiness" or ever feel "sifty" please join our cause and ask for a small dry eraseboard from your teacher when you are asked to write on the board so that you do not cause a "sifty" reaction to chalk.

He wrote on the chalkboard with chalk and immediately felt sifty.

Sifty by JAN JAN THE DANCING MAN January 11, 2009