This is when the man ejaculates into ham slices and sticks it all over the womans body. He then takes her to the top of the stairs, and pushes her down it. This is why it's called ' hamroll'
man- "Hey, let's go to Tesco, I'll buy you some ham.. giggity."
girl- "why?"
man- "cus im gonna ham roll the fuck out of you, whore!"
Okay so it's like if you leave a tampon in there for like 3 months and it stays there, and then you take it out, drain it, and then use the substance as lube for anal sex.