It can be anything like something funny, random, strange, etc.
We just finished killing some bandits that tried to ambush us during our travels. So we decided to rest up for the night since most of our party sucked at fighting. This one girl's character Rosaline Mercusio just got upset that this guy that she likes is in love with a mean dark elf. She goes in a forest to shed up tears where she was all alone. My character Markus Taven the half-elf decided to comfort her as best as I can.
We started talking a bit, which then lead us to flirting with each other. In our session, the group likes to take thier roles really seriously but, this girl took it to a whole new level. Our characters started to kiss each other, then this girl said "I'm not really feeling this at all". The she just got out of her seat and she started to kiss me for real. That totally came out of nowhere for me.
Not only that was funny as hell but that was awesome at the same time. That was my first time playing a D&D demo too. I'm definetly coming to the next session. ;)