A variation on the traditional tequila shot involving salt, tequila and lime. To do the Ironman Tequila Shot, snort a line of salt, drink a shot of tequila, and squeeze a lime in your eye. This can be followed up by a punch in the face or a kick in the junk by one of your drinking buddys.

"allow it" means to just leave something alone, or don't worry about it. People in West London say this quite often.