Freshman year at A&M, my roommate's girlfriend was over to watch the series finale of Cheers with us (yes, I'm that old). She took a nap on the couch and made sure to tell us to wake her up when it started. Instead, we moved all the clocks forward in the room, including her watch, went to our suitemates room to have them do likewise, as well as the guys across the hall. We shut the shades and turned the lights down to affect the look of later in the evening.
She woke up about an hour later, still more than an hour before the show as going to start. Looked at her watch, jumped to hear feet, and screeched "WHY DIDNT YOU WAKE ME UP?????!!!". Roomie and I looked at each other in sheer bafflement and he said, "We were going to but you looked so peaceful we didn't want to."
She was trying to see if we were going to start laughing but we held it together and she was melting down. When she asked if we at least taped it, I said, "Yeah, yeah. That would have a good idea. We should have thought of that."
She flung open the bathroom door, went and pounded on my suitemate's door, and the big Hispanic guy from San Antonio who did nothing but take massive ****s and drink like a fish all year, opened the door inexplicably wearing a sweater with his collar popped up and says, "Can you keep it down? It's a school night." She pushed past him and saw the clock on their wall read 9:30 p.m. or whatever and started screaming/crying like we had run over her dog.
She stormed back in and told my roommate that she effin hated him and grabbed her stuff, and slammed the door shut. The RA heard the commotion and decided to come see what the problem was and caught her as she was heading for the stairwell. He told her that she had been pranked and that she hadn't missed the show.
She came storming back down the hall and start pounding on our door, to which I called through the door, "Hey, can you keep it down? it's a school night." The fact that my roomie laughed loudly at that joke was the real stake through the heart for him. I believe he had to say he was sorry 9 million times before he was allowed to hold hands with her again.