Novelty Daquiris at the Renn Faire

Those giant daquiris they sell at amusement parks and the beach are such a rip. You think they're this amazing deal because they're only $3, but then you realize that there's no booze in them. So then you're stuck with a huge novelty glass of gross sweet slushy stuff, plus you feel like a total idiot for not knowing it was a virgin drink.

The only worse indignity is when you're at the Renn Faire and someone points out that they didn't actually have pina coladas at King Arthur's court. Or maybe she's drinking mead.