After being set up with fake credit cards planted in their van and interrogated by Chief Collig, he dismisses them easily, but in a gruff manner. And then Joe asks:
Are we still friends?
The always-stoic Gray Man once treated the boys to a meal, and he complains that they almost ran his paycheck dry with the bill.
Bowling as Aunt Gertrude's hobby is funny in of itself already, but the fact that she does it to relieve stress makes it even more hilarious.
At the end of Acting Up, a Bollywood star they befriended decided to have a little fun and directed a few of his fans to ask Frank for an autograph, introducing the latter as a foreign star. Joe couldn't keep a straight face and wanted to kid Frank about it, but Frank got the last laugh when he told Joe he signed the autographs in Joe's name.
During an undercover mission infiltrating a foreign military base, Frank gave what he thought was "Here are our passes." to a guard in the latter's native tongue, but the guard immediately raised an alarm, and the boys' cover was blown. At the end of the story, Joe consulted their translator, and told his brother what he really said. "Here are our shoes."