As strange as they were they all made sense to me but one...
1) Beware of people nearby
2) Watch for choke hazard
3) Don't get Wii drunk
4) Don't get Wii stoned
5) Be wary of Wii's hot flashes
6) Bag goes over head, not above head
7) Cut cord before inserting in throat
8) Crack, not cracked disc
9) Weigh crack properly before resale
10) Beware snow may not become crack
11) Electrocution accentuates high
but WTF is up with 12?
12) You kids will never get me Lucky Charms cause they're magically delicious
???