Don't get stuck in a closet -- wear yourself out.

Don't get suckered in by the comments -- they
can be terribly misleading.  Debug only code.
		-- Dave Storer

Don't get to bragging.

Don't go around saying the world owes you a living.
The world owes you nothing.  It was here first.
		-- Mark Twain

Don't go surfing in South Dakota for a while.

Don't go to bed with no price on your head.
		-- Baretta

Don't guess - check your security regulations.

Don't hate yourself in the morning -- sleep till noon.

Don't have good ideas if you aren't willing to be responsible for them.

Don't hit a man when he's down -- kick him; it's easier.

Don't hit the keys so hard, it hurts.

Don't I know you?

Don't interfere with the stranger's style.

Don't just eat a hamburger; eat the HELL out of it.
		-- J. R. "Bob" Dobbs

Don't kid yourself.  Little is relevant, and nothing lasts forever.

Don't kiss an elephant on the lips today.

Don't knock President Fillmore.  He kept us out of Vietnam.

Don't know what time I'll be back, Mom.
Probably soon after she throws me out.

Don't let go of what you've got hold of,
until you have hold of something else.
		-- First Rule of Wing Walking

Don't let nobody tell you what you cannot do;
don't let nobody tell you what's impossible for you;
don't let nobody tell you what you got to do,
or you'll never know ... what's on the other side of the rainbow...
remember, if you don't follow your dreams,
you'll never know what's on the other side of the rainbow...
		-- melba moore, "the other side of the rainbow"