Answer:This is a classic joke that plays on the expectations of the listener. The biker confidently bets the snail that he can drink a beer faster than the snail can cross the bar. The snail, seemingly confident in its slow pace, accepts the bet. The biker drinks the beer quickly, while the snail takes its time inching across the bar. When the snail finally reaches the other side, the biker is surprised and pays the hundred bucks. However, the punchline comes when the snail mentions that the biker still owes him from a previous bet, implying that the snail has been in similar is quite adept at winning such bets.