Niche jokes for like, three nerds

When he wants to get real chill he’s CBD Grey.
When he shops for knives on TV at 3 AM, he’s QVC Grey.
When it’s Halloween he’s Heebie-Jeebies Grey.
When he buys underwear rep’d by Telly Savalas, he’s BVD Grey.
When he makes a clear logical argument he’s Q.E.D. Grey.

(with apologies and admiration)