bropensity 

The natural inclination to do "manly" things around your buddies. This includes, but is not limited to: scratching your balls around your buddies, burping, farting, picking your nose, etc.

Guy 1: Hey dude! Is John's girlfriend going to watch the game with us?

Guy 2: Don't know, why?

Guy 1: Think about it man...we won't be able to be ourselves...our bropensity got's to be in check!

bropensity by Lillyblume April 19, 2012

Propensity to get Laid 

The statiscal probability of having sex in a given situaltion.

Attending Reed College will increase my propensity to get laid, while attending The Citadel will decrease said propenisty.

Propensity to get Laid by LaughingAloud July 31, 2009

Brobesity 

When you and your bros decide to become obese together.

Cashier: welcome to Mcdonalds. How may I help you.
Bro 1: We're going into brobesity, so we'd like 36 big macs, 20 large fries.
Bro 2: And 2 DIET Cokes.

Brobesity by Fatty69696969 August 14, 2012

marginal propensity to consume

*noun*; in Keynesian economics, the rate at which aggregate consumption rises in response to a rise in national income.

For example, suppose the marginal propensity to consume (MPC) is 0.95. If the national income is 100 billion dollars, and it rises 10%, then consumption will rise by 9.5 billion, and saving will rise by 0.5 billion.

If this theory is correct, then an expanding economy will suffer insufficient demand for its own output, and a recession will be inevitable.

This is why national governments respond to recessions with deficit spending: they are trying to counteract the MPC's effect on aggregate demand, and bring it in line with potential output.

Not only is the marginal propensity to consume weaker in a wealthy community, but, owing to its accumulation of capital being already larger, the opportunities for further investment are less attractive...

J.M. Keynes, *The General Theory of Employment, Interest, and Money* (1936), Ch.3

marginal propensity to consume by Abu Yahya March 3, 2009

Propensity to Bang Douchebags (PBD) 

The natural inclination of certain members of the female gender to have sex with terrible dudes.

Although there are a lot of hot birds in this bar, the Propensity to Bang Douchebags (PBD) is through the roof. We need to skate out of here immediately.

Propensity to Bang Douchebags (PBD) by The Real Matty Dubs September 29, 2008

Broversity 

Number one private university in the United States. Located right next to Hoe-versity

Guy 1: Dude, I heard you got accepted to Harvard. CONGRATS! Are you going?

Guy 2: Nah man, I'm headed to Broversity. They gave me a full ride, or two.

Broversity by BROVERSITY2013 April 21, 2009

Asian Propensity to Cluster 

The Asian Propensity to Cluster (APC) refers to the tendency for people of Asian descent to gather in large groups. This is particularly true for Asians experiencing a move to a new social setting, such as college or high school.

Yeah, the Asian Propensity to Cluster is always in full effect at freshman orientation.

Asian Propensity to Cluster by shakeybob December 17, 2010