by Petorius March 07, 2005
A male definition. Adding muscle mass or weight by going to the gym frequently and eating a high-protein diet.
by Stud April 12, 2005
The art of eating a lot of food to gain muscle mass. This art form is commonly used by people who are overweight or obese as an excuse to eat a lot because they recently bought a gym membership.
"Dude isn't that your like 8th burrito? Your going to get fat."
"No dude it's alright, I'm bulking up. I'm going to need it later for when i work out"
"No dude it's alright, I'm bulking up. I'm going to need it later for when i work out"
by Kaistianity January 26, 2012
by Raeburn June 11, 2006