Phone Tag

I was talking to my dad on the phone yesterday and he made a comment about how he had been playing phone tag with someone. Bob could only hear my side of the conversation and heard me say "oh don't you just love playing phone tag with people?" Shortly after that I got off the phone and resumed what I was doing. Bob looked at me and said "wow, I didn't realize your dad likes to play those kinds of games." (insert confused look from me) I asked him what he meant. He said "you guys were talking about playing phone tag, that sounds fun, how do you play?" I didn't know if he was serious or not. Well he was serious. He had no idea what phone tag was. I explained it to him only to get the '20 ft stare in a 10 ft room' look. I asked him if he understood what I was saying and he said "not really". I just left it at that and walked away.....giggling.