When you have to shit while you're in a dive bar and all the stalls are full so you shit all over the floor and make eye contact with a person walking in.
N: The event when the inner seam of your pants split, tear, or blow apart due to extreme friction.
Best examples of crotch blow out are seen on Raw Denim jeans, corduroy pants, and recalled Lulu Lemon yoga pants.
"Steve has such extreme crotch blow out in his Raw Denim 316 jeans from panning for gold and riding horses all day"
"I saw the most gnarly CBO in yoga this morning when that girl in front of me was doing Downward Facing Dog"
While fucking a girl doggy-style, you quickly switch holes and stick it in her ass as deep as you can, pull out and tell her she's a quart low, then kick one of her legs out from under her, making her fall to that side like a a car with a blow-out.
"Mr. President, Michelle doesn't seem too happy with you today. What did you do?"
"Last night she complained about my health care plan, so I gave her a wicked roadside blow-out in the Oval Office."