I went to 2 birthday parties today for friends' kids. I always feel a little odd at those types of parties because I have no children, no spouse and seemingly nothing to talk about with the parents that aren't my friends. Luckily the parties I went to today had parents that I knew other than the b-day child's so I felt a little less awkward.
I did have some fun while shopping for presents though - how many people (with or without kids) can name most of the characters from Thomas the Tank Engine? That must be what's taking up all the space in my brain!