Feel free to share your own stories, but some of the funniest things my rats do is yawning RIGHT in my face. Full out jaws-spread and everything. Sometimes their teeth will mistakenly bump my nose, which I know is not intentional on their part. Coming when other names are called. I have Ni Ni who runs up whenever I call for Grumpy or someone else. It always feels like a "Me! Me! Ooh, pick me!" moment. Admittedly, I enforce the behavior by picking him up whenever he does that. Grumpy likes to give kisses back whenever I kiss him. Except... he tries to lick the inside of my nose, which I discourage, but he is quite stubborn. He'll do this to friends as well. Now he licks the insides of my lips. Again, I discourage, but Grumpy is quite adamant about licking back. And of course, tail wigglers! If I rub Genji's head and shoulders in just the right spot with just the right amount of pressure and speed, his tail will begin to wiggle like crazy. If I'm lucky, I'll get kisses back, but I always get happy bruxing.