power slack

v. to slack off in an efficient manner

Luckily, my work didn't interfere with my power slacking today.

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Radio Slack

An alternative name for Radio Shack.

I gotta go to Radio Slack to buy some LED's.

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slack annie

Term used to describe a female of any age who has engaged in much more sexual intercourse than is average for a lady of her years. Thus, allegedly, her vagina would become stretched in terms of both shape and size.

I wouldn't go near her mate. She's a right slack annie

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you're slack

st george girls (2003) that stretch out the phonetics of this common phrase and sound more like ambulance sirens than normal humans like most people

that person was a fat ass

you're slaaaaaaaaccccccckkkkkk

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slack flaps

term used to describe a woman who has loose morals in the sex department, has put out so much that theres no tread left on the tyres.

i was doin this chick last night, she had slack flaps.
her flaps were so slack it was like feeding a kitkat to a whale.

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slack class

A class that is extremely easy. Usually, you do nothing in the class and you still get a good grade. People who take all slack classes are called "slackers" because they are lazy.

Dude, psycology is such a slack class. No one does anything and they all have A's.

Discreetly Slacking

Skipping small amounts of work in unsupervised scenario (such as a cubicle, the boss's coffee break or homework) to reduce the workload without the boss/teacher noticing.

Fred: How did you finish all that damn homework!?
Samuel: I was discreetly slacking.
Teacher: No one else finished their homework? You could all learn a thing from Samuel here.