This is a kind of wordplay joke you find characters using, on themselves or others, about how a Y expression is very appropriate... but not for them, since they no longer X.

For example:

• A vampire could say the trope name (open to suggestions, btw) in the form of "The city is so beautiful it takes my breath away... if I still breathed, anyway."
• Or an atheist might exclaim "Oh my god, what have you done?! Well, not anymore, anyway."
• Going with a bit of dark humor "This is an outrage, I won't stand for this!" and then "Of course you won't, you're in a wheelchair."