What's the meaning of "dorky charm??"
SCRIPT
Lynette: "Well, look on the bright side, Tom's having the time of his life."
She peeks out onto the runway where Betty scampers off stage and Tom turns his head to watch her go.

Tom: "Hands off, fellas. She's all mine."
Lynette: "I guess he does have a sort of dorky charm."

QUESTION
What's the meaning of dorky charm?
I just googled and found out dorky means idiot, ridiculous.

However, I was confused because of what dorky + charm really means
and when Lynette said this, she was slightly smiling like it's not a vulgar expression.

Question

What's the meaning of "dorky charm??"
SCRIPT
Lynette: "Well, look on the bright side, Tom's having the time of his life."
She peeks out onto the runway where Betty scampers off stage and Tom turns his head to watch her go.

Tom: "Hands off, fellas. She's all mine."
Lynette: "I guess he does have a sort of dorky charm."

QUESTION
What's the meaning of dorky charm?
I just googled and found out dorky means idiot, ridiculous.

However, I was confused because of what dorky + charm really means 
and when Lynette said this, she was slightly smiling like it's not a vulgar expression.

Answer

Gee, do they still use the word "dork"? In junior high school, being called a "dork" was an insult. It implied that you were clumsy and not particularly bright. But as rlow04 said, there are some women who are attracted to or charmed by that sort of nonthreatening kind of guy. There's someone for everyone, I guess.

Answer

A dork is usually someone who's smart, nerdy, or geeky but lacks in social skills.  Some girls find the awkwardness of dorky men charming or cute.