The act during which you treat a woman like dirt, she will then stick to you like mud.
"Didja hear about Jim and Susie?"
"He proposed to her and she said no. He then proceeded to beat her".
"Oh wow, then what happened?"
"She then said yes. Been happily married for 3 years now".
"Sounds like a Dirtmud to me".
"I'm so happy for them".