My mom taught me at home...
4 seconds sound clip from the Mean Girls (2004) movie soundboard.
You can hear this line at 00:10:47 in the Blu-ray version of the movie.
Quote context
[...]
- I'm new. I just moved here from Africa.
- No, no. I know what home-school is. I'm not retarded.
- So you've actually never been to a real school before?
- Home-schooled. That's really interesting.
[...]