muck fuck
hey did you fuck that bitch from the bar last night?  no she had a shit fetish so she wanted to muck fuck  d:
having anal sex without douching first so you ram your cock into a wall of shit in her/his ass
"hey did you fuck that bitch from the bar last night?  no she had a shit fetish so she wanted to muck fuck  d:" What is the definition of "muck fuck"?