SMDH
Sometimes one sees things on the internet that make it clear why "SMDH", "Shaking my damn head", is part of the vernacular.
I have no idea if this is genuine or contrived.
The note taped under the toilet seat says, in case you have trouble reading it,
This chick just told me she has a boyfriend the morning after.
Sorry to tell you like this, but I'd want to know if I was you.
Sorry bro
Either way - it's the epitome of SMDH. Maybe the little movie playing in your head right now actually occurred in real life. Or maybe someone cooked this up and created the note, just to garner attention.
Either way. SMDH.