Frank had pretty much expected Gerard to be happy with a couple new outfits and her and Mikey's hand-me-down baby clothes for the baby.
Oh man, was he ever wrong.
Apparently, she's already decided that, regardless of the kid's gender, it's gonna have the best nursery and a closet full of way too many clothes. A newborn can't possibly need as many fucking clothes as Gee's bought. Right?
(The one time he brings it up, in the context of "Wait, you're ordering more baby clothes? Gee, we're gonna need to swap our room and closet for the baby's if you buy many more!", she makes the most pathetic eyes at him, with tears and everything, and Frank damns himself for a fucking coward even as he hastily backtracks and agrees that the onesie is, indeed, badass.)