To Dynamo somebody is akin to ‘ghosting’ or disappearing following most commonly what would be a sexual venture. I personally like to imagine him disappearing in a puff of smoke before retreating through a window.
Christ mate, I just nailed Bridget the midget again, but she started getting a bit mental. Had to dynamo out of there.
Despite her best efforts in entrapping him, she found herself Dynamo’d once again.