A sexual act; The man and the woman engage in doggy style sex and the man pushes so hard that the womans head smashes into the fibro or gyprock wall leaving a small hole that requires patching.
Man, Me an the missus really went offlast night, I ended up giving her a renovators delight and had to call the ambulance.
I don't buy the schmegegge about Morty sleeping with Moira.
His version of the story was pure schmegegge.
The whole schmegegge was made up to get Liz a little bit of attention.