Sure, sparky! You interrupt a pre-cut rewcord, it's real hard to find the tiny little groove you were on before you started messing with it. Happens fairly often.

Morty -- make sure you're drinking enough water, wouldja??

On a lighter note, the tale (possibly apocryphal) from Princeton during Einstein's reign goes that he would have these all-night chalkboard discussions in his basement, when they were in the heat of a project, and one morning they all came up after working all night to sit around the kitchen table to eat breakfast. Uncle Albert dozed off briefly and one of the physicists at the table decided to play a joke on him by taking the food off his plate and putting the empty plate back in front of him while he was snoozing.

The master awoke, looked at his emptied plate and wiped his mouth with a napkin, burped, and said, "Well gentlemen, shall we return to work?".