Three pirates
Pirates.
The pirate says, "I don't know, but it's driving me nuts!"
3 blind mice.
The finish line at the Boston Marathon.
my girlfriend who's a high school teacher heard this from a student the other day) Q: What do you call a cow with 3 legs? A: Lean Beef Q: What do you call a cow with no legs? A: Ground Beef Q: What do you call a cow with 2 legs? A: Your mom
The Boston marathon finish line.