This person purposefully gains fat, for what reason exactly?   It brings to mind bug-chasers who think "it makes my dick hard" => "I should do it instead of just keeping it a fantasy."  He's attracted to thin only, but actually wants to be fat? What's the point in that?  I don't get non-hunk gay men who want twinks but don't want to make themselves look like a twink.  I paid good money to laser off my pubic and leg hair.  I take saw palmetto so I don't lose my hairline.  Having someone thread your eyebrows doesn't hurt very much, costs much less than what the OP likely spends on food in a few days, and lasts much longer.