How is “full blast” used?

In As Good as It Gets (1997), one line is: “But my knees knock when you turn on the charm full blast.”

Which movie is “full blast” from?

The clip at the top of this page is from As Good as It Gets (1997).

Idiom

with the greatest possible volume or power

Heard in 5 movies

(at) full blast
with the greatest possible volume or power
She had the car stereo on at full blast.

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

But my knees knock when you turn on the charm full blast.

Said in 5 films · #1