Need help with my drag fan son.

Hey guys/gals

Okay so I'm a single parent of two amazing boys (4 year old and 15 year old).

My 15 year old has a tough time at school, being shy and having a stutter.

I was cleaning up his room while he was in the shower and I need this show (rupaul) was paused on Netflix. He has been using different kind of phrases like "the shade" and "I'm gagging" (that one worried me at first). I googled the shade and found it was a drag term but I didn't understand it.

Is there any advice you can give me? I won't embarrass him and start quoting the show but when he said he was "gagging" I had no idea how to react. I would like to know how to react. I was hoping I could get a crash course on this sort of chat.

Any tips would be awesome and any stories or general advice would help.

I'm sure he is gay too for other reasons.

TL;DR single dad looking for help on rupaul chat for my son who isn't out.

Edit-thank you so much for the mostly positive response.

Edit-I've tried to respond to everyone but sorry if I missed anyone. I'm overwhelmed by how kind you have all been!