The flashing lights located on the front and on the rear of your vehicle that when you are double parked they say "I'll Be Back". Also known as "Emergency Lights" or "Emergeny Flashers".
These coppers can't give me a ticket... I had my "Be Backs" on...

by Hoe Boy May 15, 2008
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Two DJs playing together. While one DJ is spinning a record, the other one is picking a new track. As they normally store their records behind them this usually makes the DJs face backwards on each other.
DJ Tinkywinky and DJ Dipsy played back to back (b2b) last night.
by haileselassie December 6, 2010
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When you're totally surrounded by an enemy, and there's no escape, a trusted friend stands with his/her back touching yours, so you both can fight in efforts to protect each other's back. This can be done physically as well as verbally. The unity and dedication of the two coming together in this formation to act as one is a tactical defense whatever the battle may be.
At the Hot Gates (in the Hellespont), there were only two Spartans left against the Immortals who had encircled them. The two stood back-to-back defiantly in complete confidence of each other's capabilities and dared the enemy to attack, thus saving Western Civilization.
by Kit Carson January 16, 2010
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A way of telling someone to back up, or move.
by abstrak8 March 14, 2005
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A poop without a partner is a sad road to face after a night of a hard drinking, and the woods are a cold and lonely place.

Share the struggle and share the joy. Lean with solidarity against the back of another while you face the night together.
"Let us Back to back it, friend, as we squat and poop in the woods. The shame and the freedom: tonight, they are ours, together.
by I Have Walked December 30, 2011
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