These are really morals rather than things said, but they all were directly inspired by events at the Gaming Table.
1- Don't flash money
2- Don't believe or trust the waiters
3- Don't do KYO or Kumatei
4- Look before you drink
5- Look before you sit down
6- Don't hum along with Demons
7- Don't buy insurance from the duck
8- Don't Kill Halflings on Whiteford
9- Don't wrestle with 1,500 lbs creatures or Liches
10- Be very very very very very very very very very very careful what you ask for
11- The Ethereal plane is bad
12- Don't interupt a typing duck
13- Don't have Phallic conversations
14- Don't say "I'M INVINCIBLE!!!"
15- The Higher source is not always benevolent
16- Don't fire guns while ridding Kanks
17- Don't open a parachute in mid flight
18- Don't host a bachelor party for the most hated man on your world
19- Paranoia is a virtue
20- Insist on proof of ownership before purchase
21- There is no escape, the GM wil find you and kill your pets, that's what he does, that's all he does
22- NPC's will always spill their guts to PC's
23- Check behind the pillars
24- Don't taunt the GM's wife
25- Remember your Ammo Capacity
26- Check your partner before debauching
27- Magic is inheritly dangerous
28- Don't leave survivors
29- Don't use magic openly on Athas
30- The weakest PC will always be pinned under the Heaviest object
31- Swords parry daggers, seldom the reverse
32- Criticals aren't always the best rolls
33- Check the want ads before planning an attack
34- Poodles have suicide charges
35- Don't ask a horse for directions
36- Don't reason with a poodle
37- Golem's have the intelligence of a braindead frat boy
38- Carefully place the sentries
40- Don't cross the streams ray
41- Dress the pion like the boss
42- Don't hire an assassin when the assassin's guild has a contract out on you
39- Dave can not count nor spell
43- Honesty works every once and awhile
44- Try Puritainism, just might help
45- Loose di-ks sink missions
46- Waking up naked at the bottom of a glass bottom pool overlooking the dining room is not the best way to wake up
47- Don't have conversations with Mind Flayers
48- When do the living guard the crypts of the dead?
49- Spam is does not make an effective door stop
50- containment fields are there for a reason
51- Look for the obvious traps
52- Don't drink 2 different potions at once
53- Pions are the dangerous ones
54- Amok Amok Amok Amok Amok
55- 99's can be a good role
56- Don't tell the GM it's your last day at the game
57- When choosing an area to be hit in, don't take the vital one
58- Check for Piranha before bathing
59- Don't piss off Rockshillman
60- Toilet humor can go to far (really)
61- Make sure you have back up
62- Beat the woman get a luck point
63- Don't mess with religion on Whiteford
64- I'm warm and fuzzy, come to me!
65- There is a nipple in my eye slit
66- Only you can prevent Rhorhirrim fires
67- I'm talking in this voice, how do you think its going?
68- I didn't marry him, you stick it up his butt
69- Masturbating during an autopsy is in bad form
70- It's time for a little game we call "Roll the Troll", give me the belly jewel bitch!