In case you're wondering if I ever do stuff like that, the answer is yes, and even worse. In a correspondence game with 7 days per move I reached the following position:
My opponent had played 38.Qc7-c6+ and instead of 38...Ke5, I played 38...Kd4 and after 39.Qc5+ I had to resign because an even worse fate than losing the Q befalls me after 39... Ke4. Namely, 40. Rc4+ Bd4 41. Qxd4mate What caused this blunder? I don't know.