Trick him 😜
Aka hints or "random" questions

like what questions.
Please give me an example.

Like for hints i would say everything that has trans in the word i would exaggerate the trans part then i would ask for example hey what is obe thing in this world you hate

Oh so like "TRANSport" or "TRANSparent."
I'm not trans, but I want my grandfather to know that trans people and other people in the LGBTQ are valid.

Exactly