Brendan is swimming in the ocean in black waterproof lycra playing with toys as evidenced by the picture above. Apparently he carries Mr. SpongeBob SquarePants on every dive with him and his Chief found out. His Chief reiterated the "Don't Ask, Don't Tell" policy as in "we're not asking if you're a dumbass that totes around a doll in his underpants, so please don't tell us".
Of course the boys now think that Uncle Brendan is the COOLEST because he personally knows Mr. Pants and visits him on the bottom of the ocean. Now we have to break the news to them about Santa Claus, the Easter Bunny and why their 27 year old uncle has a dolly.