While you are wondering what to do with your spare ticket the phone rings. It turns out to be your ex-girlfriend Tilda, or 2-ton Tilda as you daren't call her. You split with her because she's fat and was expensive to take to dates.
"Hi Billy, I'm coming over because I need some company. Get something prepared OK?"
"I'm sorry Tilda. I've got other plans."
"Other plans? What other plans? What's more important than me?"
"I've recieved some free tickets to the zoo."
D'OH!! You really must learn to think before you speak. On hearing the plural of "free tickets" Tilda instantly invites herself along.
The two of you arrive at the zoo car park and you help Tilda get out of your SUV. "Right, I hope you brought money because I feel like a snack first. Oh, and don't even think about making jokes comparing me to certain animals, got that?"
"Got it." you sigh, following her. You still picture her as a hippo in your mind though as you head for the snack bar