Big Meaty Gay -
"Muscle bear/Husky build. Looking for someone who appreciates the extra meat." For something more direct or playful: "Who needs a gym buddy when you've got all this beef? 😉"
"Just a thick-built guy who loves a good burger after the gym." big meaty gay
"I hope you like 'em big and meaty, because I'm not going anywhere." "You look like you need a big, beefy hug today." "Muscle bear/Husky build
There are also specific cultural references you might be looking for: Interview: Karl Kuehn (Gay Meat) - The Big Takeover big meaty gay