>Whenever I see Flask code, it just reminds me how unbelievably succinct Sinatra is.

I hereby dub this the programmer equivalent of "sharp knees".

Explanation from the ever inimitable Urban Dictionary:

"A judgment leveled against an otherwise perfectly proportioned, if not slightly trim, and pleasant looking woman. Generally uttered by a male who is way below her class."

This comment is otherwise beneath a reasoned response.