loyalty programs fine print—ever actually read it?

I stumbled across this random trivia today that Starbucks' loyalty program terms used to explicitly mention they could terminate your account if you were rude to baristas. Um, kinda hilarious but also makes sense, right? Got me thinking...I never really read the fine print of these reward things, just click "agree" and move on. Wondering now what other weird or quirky stuff companies sneak into their loyalty program agreements. Has anyone spotted something equally interesting hidden in the small print?