Matching PJ's

Jack had his friend Sam spend the night. They played hard and when it was time to get ready for bed I pulled out a pair of PJ's for Jack and gave them to him, Sam went to his bag and pulled out the exact same pair. They had no clue they had the same ones. They thought it was quiet funny. But we should have guessed that these two would have the same football pj's. That is all they talked about. They were up at 6am talking football in Jack's room!