senile turnmentia Share definition Flag When the old guy in the car in the left turn lane in front of you has his right turn signal blinking. OMG, he's got the wrong turn signal on again…must be a severe case of senile turnmentia... senile turnmentia by tanker177 February 18, 2011 0 0 Get merch Get the senile turnmentia mug. Buy Now — $32.95 See more merch