One day a man walks in a bar

He sees a sign that says “Free beer to anyone that can make this donkey laugh”

So the man walked outside and a few minutes later he walked back inside the bar and asked the bartender for his free drink.

A couple of weeks later he came back to the bar and seen a new sign which said

“If you can make this donkey stop laughing you can have a free beer” So the man walked outside and a few minutes later he came back into the bar and asked for his free drink.

The bartender said “ok, but first I half to ask you how did you make the donkey laugh and stop laughing?

The man replied with “The first time I told him I had a bigger than him and the second time I showed him!!!”