an expression that is intended to convey excessive excitement. the beauty of the expression is that it has a double meaning; one literal and another entirely figurative but much more ridiculous.
1) to be shitting in one's pants
2) to be excreting pants from one's rectum
(over the phone): hey broski, guess where i'm at? in line to see the offspring. i'm shitting pants!
1. Intoxicated by alcohol to the point of losing control of the anal sphincter, thereby releasing foul putrescence with such velocity as to ensconce not only one's gitch, but also spill out and permeate the pants.
"A few of us are getting pants-shitting wasted tonight. You should join us in the festivities."
"You wore new pants? Too bad. Guess no one told you we were all getting pants-shitting wasted tonight."
a bass drop in a song, usually from the dubstep genre, that causes all in attendance to shit their pants.
bro #1: were you at that concert last night?! I heard there was a pants shitting bass drop
bro #2: yeah man! Borgore dropped the beat so hard that I shit myself multiple times!
Believe it or not, shitting your pants is exactly what it sounds like. It's when you shit in your pants. See also suprise shit
"Hey don, how was math class?"
"Mr. Hendricks wouldn't let me use the bathroom so I ended up shitting your pants*."
"... I can get your notes for the rest of the week."
*i wanted to put down shitting my pants, but the UD wouldn't let me