I didn't know they were having a party for him (his birthday was last Friday). I was told to take his son there after my son's party because that is where he was going to be. (he usually spends the weekends he has his son at his sisters because his niece is the same age as his son and his son is bored at his house) His sister lives in a condo so I had to park in the guest lot and walk his son to the door. I didn't even know the rest of his family was there (the guest lot is up a ways from her condo and I wouldn't recognize their cars) She invited me in so I went in to say hi. It wasn't an intentional "party crashing"
