passed or past?

[doorknob]

Is there a rule for which is used when?

Are they just two forms of the same verb used in different tenses or does one refer to motion and the other to time?

[jno]

QM - I got the joke - I guess I should have attached a few emoticons to make it clear :D :D :D lol lol...

[Quizmonster]

For goodness' sake, don't ever write 'LOL' again! Virtually no-one who does write it ever was actually "laughing out loud". Smiling wryly, perhaps, but not laughing out loud.