When you're being chased by a ghost in Pac-Man or Ms. Pac-Man and you quickly turn around after thinking you ate a Power Pellet, just to find out you didn't eat it. You end up losing a life.
This happens more in the higher speed levels because you try to eat the Power Pellet and then eat ghosts as fast as possible.
A combination of the words "probability" and "calculation." It is therefore a calculation of the probability of an event. High-profile scientists and forensic detectives use this word all the time in that it increases their verbal efficiency by approximately 3.5%. It can also be used in the verb form (probulate)
when two people unknowingly flirt with each other to such an extent it becomes unbearable to witness much longer by outside parties
Girl: Tell me please!
Boy: I can't tell you it's a secret
Girl: But I wanna know, it's -
Outsider: Hey, could you two stop with the verbal copulation and buy us some drinks