5301991f_and_The_Art_of_Breaking_Things__detailed_explanation
[signal] Twisted smile [part of body] mouth [possible meaning(s)] mixed feelings or sarcasm [detailed explanation] 
Shows opposite emotions on each side of the face.
“I pretty much try to stay in a constant state of confusion just because of the expression it leaves on my face.” – Johnny Depp | Zen and The Art of Breaking Things
detailed explanation