Urban Dictionary is a great page and I thought I'd simply push another blog post out there with some phrases I particularily like:

Man Cave:
A room, space, corner or area of a dwelling that is specifically
reserved for a male person to be in a solitary condition, away from the
rest of the household in order to work, play, involve himself in certain
hobbies, activities without interuption. This area is usually decorated
by the male that uses it without interferance from any female influence.

Bachelor wash:
A quick soap-free rinse of a plate, cup, or utensil which had recently
been used. This is most useful for low-oil, water based, or dry foods.
Wiping with a paper towel will usually remove residual food particles
missed by the bachelor wash.

To use Facebook as a platform to brag. Normally about a job, internship,
trip, purchase or anything else that nobody really needs to know but
you'd like to tell everyone because you're awesome.

running latte:
showing up late to work because you stopped for coffee along the way.

mow the laundry:
Doing a load of laundry after allowing clothes to pile up on your
bedroom floor for weeks.

brown chicken, brown cow:
An onomatopaeic imitation of the guitar riff commonly heard in 1970's
porn movies.
Jim: "Hey, where are Abby and Jake?";
Tom: "Brown chicken, brown cow.";