Bad Pun
A Man walks into a pub with a giraffe, walks up to the bar and orders himself a pint and a whiskey for the giraffe.
The man downs his pint and the giraffe downs his whiskey.
The man goes back to the bar and orders another pint for himself and a double whiskey for the giraffe, takes them back to the table and they both down their drinks again.
The man returns to the bar and orders his pint, a double vodka and some peanuts for the giraffe.
They both down their drinks and the giraffe eats his peanuts. By now the giraffe is swaying from side to side and the barman calls last orders, so the man rushes to the bar and orders his pint and the giraffe a double vodka.
Once again they both down their drinks but this time the giraffe topples over onto the floor and the man stands up and makes his way to the door, the barman notices and shouts to the man "Oy! you can't leave that lyin' there"
The man turns to him and says "You idiot! its not a lion its a giraffe"