He's too shy for something like that. He hates parties. In fact, we tried to have a party for him when he was 18 years old, and he's so shy, he didn't even show up.
10 seconds sound clip from the The Nutty Professor (1996) movie soundboard.
You can hear this line at 01:19:49 in the Blu-ray version of the movie.
Quote context
[...]
- Now if you don't mind, I have a date at the alumni ball, and you have a date with linoleum.
- Who?
(Sherman's mother laughing) (2)
- No, no, no, child. Not a wild party. Not Sherman.
- Well, I must admit, it didn't seem like the Sherman I know.
- Is that a test tube in my pocket or am I just happy to see you?
[...]