[Colorful Night Short Stories] Who is Bigger?

Introduction to the Work: Yeonwoo, Siwoo, and Ian, inseparable since elementary school, meet up after a long time for drinks at Ian's house. A little tipsy, Ian and Siwoo suddenly start bickering, each claiming their penis is bigger... Yeonwoo, who just wanted to drink quietly, blurts out nonsense in his drunken state. "Hey, how do you know whose dick is bigger without taking them out? I'll settle it today, so take them out, let's see." Ian and Siwoo, who have harbored a crush on Yeonwoo since middle school, have no intention of missing this opportunity, and they take him to the bedroom and pull out their penises first. "Yeonwoo, if you can't gauge it just by looking, why don't you hol...