Facepalm
aːð sɛːdja hœndɪna fɪːɾrɪr andlɪdɪð ʋɛɡna ʋandəraɪða ɛːða ʋɔnbərɪɣða
In Icelandic Að setja höndina fyrir andlitið (vegna vandræða eða vonbrigða).
The act of covering one's face with one's hand, especially to express embarrassment, frustration, or disbelief.
Example
"When he started singing off-key, I had to facepalm."