People and animals decide how to act based on a sophisticated and usually subconscious cost /benefit analysis they conduct.
People and animals have already run a cost/benefit analysis of each behavior they repeat, and know the benefit(s) repeating each of those actions will yield.

When a human or an animal foresees that it is very likely that a specific action will produce a specific benefit, he or she will execute it.

Thus, "a likely benefit triggers action."
by but for March 05, 2018
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pump action yoghurt rifle

Word used to describe the male reproductive tool
Sean used his pump action yoghurt rifle with comparitive ease, deploying his semen all over Caitlin's face
by Dave Catmur December 02, 2003
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Chuck Norris Action Shorts

1. Men's shorts that fit too tight and are too high, by social standards

2. Athletic shorts from the 70's and 80's.
A guy is trying on some shorts that are to small for him.

Dude: What do you think of these shorts babe?

Chick: They look like Chuck Norris action shorts.
by the david thomas April 01, 2008
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Action Hero Pain Syndrome

The tendency of many macho guys to brush off pain from serious injuries in day-to-day life, while behaving like complete blubbering weenies when receiving routine medical care. This allows them to appear to have a (manly) high pain threshold, and yet still get copious sympathy from loved ones at the hospital.
Jenna's husband didn't flinch when he sliced his hand open while renovating their kitchen. But he sobbed inconsolably when they put in an IV at the ER. Jenna coddled him and yelled at the nurse, but it was a clear case of Action Hero Pain Syndrome.
by Sir Elroy May 11, 2011
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Pin on Pin Action

1. The act of forcing pins upon each other in bowling. By hitting pins with force they will continue to knock over other pins.

2. The greatest bowling team to ever walk through Oswego East High School. Team members include Tim Timmy Testycleez, Humza the perks of being a humza flower Humzizzle, Shane Mr. SparklePelvic Pin Thruster, and The Hammer himself, Rob.
1. Thanks to some great pin on pin action, I got a sweet strike.

2. So last night Pin on Pin Action whooped Pat Magroin. Tim, Humza, and Shane were hot, but the game was decided when The Hammer brought it down with another 10th frame turkey.
by Slah P May 09, 2007
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live action role play

The extended version of the acronym 'LARP', which is pretty self explanatory. LARP is a type of game or sporting activity similar to most modern RPG video-games, however as the name suggests it is done in live action, meaning real people in real environments. Players create their characters based on the fictional universe that their LARPing group has established and often take on particular roles or 'skills' in which they level up to benefit themselves or their team in pursuing a goal within the universe; examples of which could be overthrowing a tyrant leader to rule a kingdom, becoming the strongest player/s in the game, or simply just seeking revenge on that one friend that always screws you over. Most LARPs involve medieval or fantasy combat with soft foam weapons, some have pre determined stories where as others allow the actions of players to affect the direction of the plot.
They explained to their friends that LARP was actually an acronym, standing for Live Action Role Play
by The fat beard February 01, 2015
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pump action porridge gun

a penis, so called as it 1) requires a back and forth action that resmebles that of a pump action shotgun 2) for some semen looks like porridge? 3) it shoots it everywhere like a gun
he has a massive pump action porridge gun, hes slung like a horse
by barclay shabba May 06, 2008
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