Dunno if anyone knows this but I've never seen it mentioned. Anytime Diddy throws a Banana and it hits Pit's shield, wheter it be Glide tossed forward, backward or simply throw normally Pit can Up B OoS from the ground and use a FF'd Fair to grab the Banana and possibly hit Diddy. It's particularly effective if Diddy Glide Tosses forward as the Wind Push from Up B pushes Diddy back enough that he "shouldn't" be able to follow up with anything. Haven't tested it with other aerials or looked at Diddy's options from this position really but with Fair it's 100% guaranteed that you'll grab the banana and I'm pretty sure Diddy can't hit you with anything afterwards.