I once spilled my pint on the shoes of the guy who plays the dad from My Parents Are Aliens. I apologiaed and he started calling me a fucking cunt and I thought he was genuinely aggrieved until he started laughing and then picked me up in a bear hug, spilling what remained of my pint in the process.
At chucking out time he got on (presumably his) pushbike and fell off about 50yds down the road and started chuckling loudly to himself.