Certain facial muscles.
When i think about her even though I don't know where she is right now
( @ Y @ ) !!!!!
Smile? Whass that?
Hearing from my son, watching my cat(s) play, my cat jumping up to join me, sometimes the questions and/or answers on EP, any unexpected positive thing.
kids doing silly things, adults tripping over their own two feet, good jokes. pretty much anything funny. :)