Tumbler in Troursers Pocket

"I've never seen such size and volume in 23 years of my gay life!"

Han Seol, a good-looking college student, is popular with his seniors and juniors alike. After playing around all night, he falls asleep in an important lecture. Luckily, he is able to copy the notes of the model student Hyeon-U.

Seol keeps glancing at Hyeon-U, who is his ideal type. For some reason he puts his hand in Hyeon-U's bulging pocket and asks, "Why is there a tumbler in your pocket?" Seol feels something slightly unusual in his hand?

(Source: Peanutoon, translated)