What's the most spontaneous thing you've ever done, and how did it turn out?

Sent a message to my group of friends one night to meet for dinner in a random gas station that had a small 24hr diner we chose on Google Maps. 1AM at night on a weekday, 5 cars pull next to the place, 7 guys walk in and have a late dinner. I am sure the owners were weirded out and stressed about it but it was great. The food was mediocre.