Rumours about him playing away for years, surprised he turned up so pished he got locked up for a night though. Breach of the peace and a fine for first offence I'll bet.
His NYE allegedly involved him getting in an argument with the World's Sexiest Jockey then a fistfight with his immediate family where he accidentally punched his mother. His Dad and brothers then laid him out; he ran away to gatecrash a nearby party.
There are a lot unfortunately. The two big ones would be that he's got a problem with the nose beers and that his retirement pre-world cup last year was due to his antics the Common Riding event in the Borders.
Search Stuart Hogg on reddit /r/rugbyunion and you will get more details/stories. I'm the same age as him, living in Edinburgh, so sometimes stories can land on my whatsapp a wee bit before they appear online but they all appear online after a few weeks.