My Sim doesn't know Kirby Wise, she is not a celebrity and doesn't do anything other than acting normal. I just can't figure out why Sims sometimes react like this. NPCs also do it at each other. h...
It seems to be related possibly to social groups(opposing social groups maybe?), also it maybe related to things like what the sim in question is doing, I know I got that reaction when I slept on someone's lawn. :smile: