Fics like Perry-digm Shift

Agent Perry, Codename: Platypus, thought he had his whole life figured out. Until, unexpectedly, he found himself pregnant with his best friend Lawrence Fletcher's baby. Taking a step back, he became just "Uncle Perry" to Ferb so his baby boy could have a happy and full life. But, as Perry should've known by now, life sometimes had a funny way of interfering. (Human!Perry AU, Trans!Perry AU, Perryshmirtz)

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