the act of placing a turkey baster in one's anus and farting into in, capturing the fart, and then shooting the fart in someone else's nostrils. It is a combination of the words shit and Baster.
Tommy is giving everybody around here the shaster
by Jorge shastermaster February 19, 2008
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A nickname used for a female with the name Shasta. Usually a really hot female with a large chest. Known throughout Canada, and the US
"Damn, Shaster is a total babe!"
by Babii-Girl* December 17, 2008
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Used to prod midgets out of your way. Usually telescopic in design for greater distance. At full length, can be swung like a bat to provide more clearance at 2-3 midgets in one fowl swoop.
"That guy has the longest midget shaster I've seen."

or

"He had such a long midget shaster he couldn't keep it in his pants."
by Nelson76 June 22, 2005
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1. A shit so painful, so large, so juicy, so fresh, so incredibly toxic and smelly that it feels like your asshole is being ripped in half.

2. A shit that has the smell of death. It can easily floor an Elephant, melt the paint off of cars outside, petrude out of walls of your house and woft down the city block, shut down your electricity for hours, short-circuit a refrigerator, kill roaches, and make the toilet itself beg for mercy.

3. A shit so large you need scissors to cut it off from the rest of your asshole so you can let it rest in the toilet.
Bob: Tim left a Shaster McGrotha in the Cracker Barrel bathroom
by TheGayAccount June 20, 2020
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