What is, to you the funniest one line in a movie?

I sorta like this one…
https://youtu.be/iCYMoD8SfpQ

I LIED!

All lines in Tootsie.
https://www.youtube.com/watch?v=pcSQxb-3QAY
And this long scene:
https://www.youtube.com/watch?v=1_ZAcekCHaE

Anything in Young Frankenstein
What Knockers
Abby Normal
What’s the matter with you people – Open This door
etc, etc, etc

“I ain’t got no bo-dy!” -Igor from Young Frankenstein. His sudden outburst scared the hell out of me the first time I saw it.

There are so many! This one came to mind.

“When I was a kid, my mom told me THAT was my special purpose…” Steve Martin in The Jerk.

https://www.youtube.com/watch?v=BXDXLFNUWuY

Some lines from Blazing Saddles were pretty funny, although politically incorrect these days.

Mel Brooks is a fav here. https://www.youtube.com/watch?v=PmZFGw5CeWE

Ace Ventura made me laugh longest. https://www.youtube.com/watch?v=thlrP8_lk-Y