–noun
1. any size Medium shirt (especially a T Shirt) worn by a man whose body-size would usually require a size Large shirt for comfort, worn for the accentuating affect it gives to musculature of the torso and arms; The resulting effect is similar to that of a medium-sized person wearing a size Small shirt.
2. a nickname for a man wearing such a shirt
Jeremy - "Rob, come on up here!"
Rob - "What size shirt you got on?"
Jeremy - "Fuck you."
Rob - "The price you pay when you rock a shmedium in this place."
-Season 3 Episode 8 of 'Rob Dyrdek's Fantasy Factory'
When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.
I saw Satantango last night, wonderful film but by the 5th hour I had to start doing pee calculus.