How is “get it up” used?

In Avengers: Age of Ultron (2015), one line is: “We won't hold it against you if you can't get it up.”

Which movie is “get it up” from?

The clip at the top of this page is from Avengers: Age of Ultron (2015).

to have an erection; to raise a bid, price, or other amount until it reaches a stated level

Heard in 10 moviesPlay Slang

Oxford60% of films
to have an erection
...you'll be too old to even get it up.
Editorial40% of films
to raise a bid, price, or other amount until it reaches a stated level
I just got to ensure we get it up to 250.

Definitions from the Oxford Advanced Learner's Dictionary, 9th edition

We won't hold it against you if you can't get it up.

Said in 8 films · #1