What is Happy Slag?
1.
The practice by which, after a split with one's girlfriend, one sends intimate videos captured on a video 'phone, to every one knows and/or meets. They then carry on the chain, sending it to random punters in restaurants/pubs/airports etc by Bluetooth.
'Ere John, come and see this Terry's brother in law's cousin's gone and happy slagged his ex, everyone down the Feathers has seen it...
See