Mystery Hole Penis Joke

Text on the meme

謎の抜け穴 Mystery Hole wow, I REALLY shouldn't STICK my PENIS in there. ...HOWEVER,

What it means

A hand-drawn side-profile character reacts to a photo labeled “Mystery Hole,” saying he really should not stick his penis into it, but the “...HOWEVER” implies he is strongly tempted to do so. The joke is an absurd, deliberately crude reaction to an innocuous hole in a stone wall. EN: A hand-drawn side-profile character reacts to a photo labeled “Mystery Hole,” saying he really should not stick his penis into it, but the “...HOWEVER” implies he is strongly tempted to do so. The joke is an absurd, deliberately crude reaction to an innocuous hole in a stone wall.

Objects

stone fortress wall / каменная крепостная стена water-filled hole / заполненное водой отверстие mystery hole sign / табличка «Mystery Hole»hand-drawn speech bubble / нарисованное облачко речи side-profile person / человек в профиль black ink drawing / рисунок чёрными чернилами stone blocks / каменные блоки water / вода plants growing from wall / растения, растущие из стены