A copiously large shit that completely fills the toilet bowl
Damn Daniel just took a magnum shit and broke the pipe
If you are having these consistently enough to need a word for them, eat some goddamn fiber.
Word of advice, up to you, but if you don't eat enough fiber for too long:
1) you will bleed
2) you will eventually need to be hospitalized with one tube up your nose and another up your magnum shit dispensing ass. If you're deranged enough to like the concept of a tube up your ass, don't worry, you'll be shitting yourself constantly in no time.
source: BEEN THERE, DONE THAT