look up any word, like eiffel tower:
 
1.
Diarrhea, the runs, urgent need to have a bowel movement.
"Oh man! That fast food last night gave me a backdoor mudslide this morning."

"I was so sick last night; I had a major case of backdoor mudslide!"
by JayXan September 09, 2006

Words related to backdoor mudslide

the runs crap major poo shit turd