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4.
When someone is passing gas and you don't hear any loud fart vibrations, but clearly hear the gas excrete.

The fart sounds like: ffffft

"You guys be quiet, listen to this sift"

"You better not eat more than 5 White Castle burgers tonight because they next day you'll be sifting all day"
by Tone Da Bizzy December 03, 2007
 
1.
Acronym- Shit I'd Fuck That
Used to describe a hot person of opposite sex walking by
Bob: Dude, Joe look at that fine piece of ass eying you on the other side of the bar

Joe: Sift...sift all night long

Bob: haha hellz yeah
by siftfarmer November 09, 2009
 
2.
word meaning someone who is a bit sleazy. It can be changed to and adjective and it has many uses
'Mike is going for a sift'
'That Mike guy is quite sifty'
'Mike is all about the sift'
by Ben October 11, 2004
 
3.
1 The bottom of you bag of weed. contains flakes and weed dust that often times is impotent. Sometimes used to add a little weight to the bag depeding on the douchitude of the dealer. or

2 If your getting ripped off the contents of your entire bag of weed

see shake
1 Weed conissuer 1: I just bought some of that bomb shit man.

Weed conissuer 2: Lets just through that little bit of Sift at the bottom and add it to the blunt to fatten it up a bit.

2 Newbe smoker 1: I paid 40 dollars for this. It looked like a bud because of how compressed it was.

Newbe smoker 2: thats definately 3 grams of sift dude... and it smells like middies

Weed conissuer 1: You bitches got owned. Smoke some of this Blueberry haze with us.
by Refeerus Majoris January 28, 2009
 
5.
Verb. To relax, kick back for a while
I'm tired - I really feeling like sifting for a while
by Standoc August 29, 2007
 
6.
to sort through bodily secretions to find something that was lost in the body ie swallowed
i had to sift three loads before finding my keys
by Persephone May 06, 2005
 
7.
To ejaculate into a type of strainer, or "sifter", and then proceed to spread your man butter across someone's face.
Being the lonely teenager he was, Andrew frequently sifted on his own face at night.
by Wave of Sift February 15, 2007