[ol]
[li]Don’t Step On My Blue Suede Shoes[/li][li]Don’t ever spit in the wind[/li][li]Don’t take my Kodachrome away[/li][/ol]
Commercials, songs, TV, movies all count.
So, what 3 Don’ts apply to you?
By my personal moral code, it is forbidden to tug on Superman’s cape. Spitting into the wind is also something I avoid, as is pulling the mask off the old Lone Ranger. Additionally, I don’t mess around with Jim (or jjimm, for that matter). But that’s just me.
Don’t let the sun catch you crying.
Don’t let the green grass fool you.
Don’t sit under the apple tree with anyone else but me.
Don’t tell me you love me
Don’t stop believing
Don’t sweat the technique
Don’t be cruel.
Don’t let me be misunderstood.
Don’t make me over.
(three sentiments I actually endorse)
Don’t speak! I know what you’re sayin’, so please stop explainin’, don’t tell me 'cause it hurts.
Don’t stop 'till you get enough!
Don’t let your babies grow up to be cowboys.
Don’t blame it on the sunshine,
Don’t blame it on the moonlight,
Don’t blame it on the good times.
Don’t stop the music
Don’t stop believin’
Don’t be too late, don’t come too soon
Don’t stop thinking about tomorrow.
Don’t let the sun go down on me.
Don’t eat the yellow snow.
Don’t have to live like a refugee.
Don’t do me like that.
Don’t come around here no more.
Don’t Dream It’s Over (hey now)
Don’t You Forget About Me
Don’t Rock The Boat, Baby
Don’t, don’t you want me? You know I don’t believe it when you say that you don’t need me…Don’t you want me baby?
Don’t go away. Say what you say, but say that you’ll stay forever and a day.
And the most sage words of all…
Don’t whiz on the electric fence. (too obscure?)
Don’t talk to strangers, baby don’t you know?
Don’t take your love to town
and above all
Don’t worry, be happy 
Don’t tell me what to do. Don’t tell me what to say.
Don’t leave me this way.
Don’t hang up.
and
Don’t you come back no more! no more!
and furthermore…
Don’t come home a’ drinkin’ with lovin’ on your mind.
Don’t Turn Off the Lights (Enrique Iglesias)
Don’t Laugh at Me (Mark Wills)
Don’t Stand So Close to Me (Police)
From schlockmercenary.com:
(1) I don’t taunt elephants.
(2) I don’t stand next to people who taunt elephants.
Don’t touch me there
Don’t you eat that yellow snow
Don’t bogart that joint, my friend.
's cool. 
3 things!
One…
Two…
THREE!
Now, you try ! 
:smack: