A man walks into pub and treads in a turd that one of the regular's dogs has "laid." He goes upto the bar and says to the barman "There's a turd on the floor over there" pointing to the moist mass. "OK, I'll clear it up in a minute", says the barman. Before he gets a chance, another man walks into the bar and treads in the turd.
The first guy laughs and says "I just did that!" So the second guy grabs him and rubs his nose in it!