Riding a sheep; like bull riding but with a sheep.
“Hey do you want to go to the petting zoo? People will be riding sheep, Mutton Busting.”
"Why were at the petting zoo at 3 am?"
"I was mutton busting"
"niiiiiiiiice"
To make the "Bahh" noise typical of a sheep while you are achieving an orgasm.
"I mutton busted all over her face last night. She had no idea why I was 'bahhing' but she didn't seem to care."
Often occurs during coitus when one's partner makes a retarded animal sound causing one to flip them on their back like a farmer and pound it out like a rodeo star; The mess it leaves behind requires a calf style cleaning where one's partner licks everything clean.
Brooo, she honked like a downsyndrome goose so I flipped her over, held her wings, and started mutton busting.
EX. 2: She wanted me to take her mutton busting so I told her to be a baaaaad gurl and I'll call the farmer.