You never leave me open, son, 'cause I'm gonna hit it every time.
6 seconds sound clip from the Billy Madison movie soundboard.
You can hear this line at 00:51:13 in the Blu-ray version of the movie.
Quote context
[...]
- Take it on! Pick it up and give it the old... Yeah!
- You want some of this? Oh, my dear Lord!
- You never leave me open, son, 'cause I'm gonna hit it every time.
- You want some more of that? I didn't think so!
(BURPING) A, B, C, D, E, F, G...
- All right, stop before I throw up.
- You wanna go play soccer with us after school?
- No. I got a test on Friday. I'll play with you guys next week.
[...]