If you can use basic common sense, you're OK. But, when...

If you can use basic common sense, you're OK. But, when you're a college kid, dying to play in the NFL, and now you have scouts from the Giants, the Seahawks, the Cowboys all waiting on you, and you're trying to figure out how many 25-cent eggs Sally needs to sell to make $ 15, you're afraid you're going to look stupid.