When an immense amount of pubes has been witnessed in an unsightly manner. Like when a fat lady shows you her hairy vagine. Or a crazy man flashes his unshaven haven.
a useful invitation when you don't know your prospective date very well, ie what their nearest or most favoured pub is. also a useful invitation to friends when you don't care where you drink or who will be there but after the day you've had you bloody well need a bender.
'fancy some pubbage next friday?' or 'i fell over three times today for no goodreason and got fired. who's up for some pubbage?'