An Irish guy in an Amsterdam pub thought he would impress the lads by drinking a pint upside down. Instead he amuses everyone an even better way when he passes out.
I guess this guy already had one too many pints before deciding to have all the blood rush to his head and drink upside down. As he realizes he cannot complete the task he tries to just get up and walk away. As he does so, all that blood rushes back to where it came from leaving him light headed enough to faint and perfectly smack his head against a table knocking himself out instantly.
Watch this Irish guy try to drink a beer upside down and knock himself out.