Here are a couple more. We've been keeping a set of rules, sayings and -isms over the last 18 years of gaming and friendship. Many are be amusing, more than a few are offensive but all are tied to a bond developed by four foolish lads in love with RPGs, the annual trek to GenCon and the cultivation of our inner geeks. Really, it's just a good way to lovingly remind each other of the stupid things we do and say everytime we get together. So far we're up to #2047.
"We worship Our Lady of Perpetual Sarcasm" - a couple of clerics in a campaign a number of years back.
A hapless thief character of mine had a proviso, "a small measure of ineptitude invariably leads to success." He stayed alive all the way through 15th level and the original Temple of Elemental Evil through either serendipity or the good graces of the DM in our group.
A rule to live by - Never cast Flesh to Stone on a Flesh Golem
And the ever popular famous last words, "Magic Missile a snake??"