O.T.N.

Really it's ochin but it means dick

Jee my o.t.n. Is big!

(I don't know lmao)

Watching Junjou

refers to watching any of the anime based on Shungiku Nakamura's work while sh-ing

guy a : "im gonna go watch junjou"

guy b : "please stop "watching junjou" and go seek a therapist"