While I appreciate the humor, I do hope this guy immediately went out and looked for a new place to live. I'm no expert on woman, but I do know that dropping a fake turd in the shower on her is basically as bad as dropping a real turd in the shower. Psychologically there is no real difference here, the end result was going to be her being pissed and you cleaning that shit/non-shit up either way bro.
One tip though, when you're playing the old "make a turd out of chocolate prank" you have to be fully committed. The fact that this guy did not take a bite out of it when she was refusing to smell it is unbelievably disappointing. Brings this all the way down from an A- to a C+. Sooner or later he'll wake up and realizing he's been half-assing his way through life.