test fart 

When you are in a social / public situation and have the urge to pass a considerable amount of gas. If it has been a long time since your last fart, you are unsure of:

1) The sound level (volume) of the fart
2) The smell level (stench) of the fart

... so you let out a small amount of the fart in a discreet fashion- thus you have let a test fart.

Frank was in church the other day and had to fart really bad. He said he intended to let a test fart but instead of a squibbler, it turned out to be a blastus and he wound up shitting his pants in the middle of the sermon. Damn, what an idiot!

test fart by Frank Klaune April 14, 2005

test fart 

Basically when you're around people (not alone) and you really have to blast one, so much so that your stomache is starting to ache... so you let out a small amount of gas in hopes of it being a quiet or non-smelly fart. If it smells or is a blastus you hold it back, but if it's a quiet one you walk around and pass the gas in a discreet fashion.

Hung was in class earlier and he had to fart, he intended to let out a test fart in the back of the class but instead of is coming out as a quiet and/or non-smelly fart he accidently Sharted.

test fart by JerryCurlPubes June 16, 2005

The Fart Test 

The fart test is a test of the closeness of one's relationship to another. If one is comfortable farting in front of others it means that they are close to that person and they have a good relationship with one another.You can tell how close you are with another depending if you hold in a fart around them or if you let it out without giving a shit.

The Fart Test can distinguish the relationship between two people such as
gfs farting in front of the bfs
best friends farting in front of one another

The Fart Test by tootinme January 4, 2011

the fart & flour test

n. A simple test to rank the obesity of others.

(Upon observation of a really fat bastard)
"Geeez. You wouldn't want her to fart in your last pound of flour"

the fart & flour test by brad July 21, 2003

Testfarting 

When you are sitting in the movies or on a bus and you have a build up of Gas ....you let out little test farts to check the fumes......

I was sitting in the movies had to do some testfarting to check on the fume volune and was blown away along with the next two rows

Testfarting by just me the grizz September 7, 2011