I was moved to respond to him on Facebook:
Used in a sentence: “A lot of wildlife habitat loss in the world is occurring due to defenestration.”
For that grammatically correct sentence, I wish to defenestrate you, mrawdon!
I later stopped by his office and observed that everyone talks about defenestration, but refenestration never gets any love.
It turns out the Urban Dictionary has a definition for “refenestrate”:
Sad to say, this exchange may have been the high point of my day. Sure made me laugh, though!