Cheap shot 

Also called fighting dirty is an action or actions that are considered 'dirty,' deliberate, unnecessary or excessive because they are perceived as unethical, unfair, dishonest or a 'last ditch desperation move' ways for one to gain favor or the upper hand in a scenario for themselves or their cause as oppose to "taking the high road and fighting fair". These are aimed at something vulnerable, sensitive or unprepared for the damage.

These actions are usually considered to be easy, crafty ways to get a desired result and may involve breaking written and social rules or involving things that aren't even relevant to the issue at hand if convenient to quickly make things difficult for the opponent and 'take heat off themselves'. They may also be used when the user simply has no legitimate or fair moves, points or reasons to get their way and desired victory or glory or might not even deserve it, but to someone willing to use a cheap shot "a win is a win, even if everyone else thinks I'm a scumbag. They're just jealous!"

In Avatar the Last Airbender Azula zaps Aang in the back while in trance, nearly killing him and unknowingly nearly blocking him from ever being able to return to the Avatar State again. She later attempts to zap Katara while fighting Zuko, though Katara was not involved or on guard, but Zuko took the attack nearly to his heart which might have been fatal. Thus Azula assured herself victory over at least one of her enemies.

Ad hominem is considered a cheap shot in debate

Media using images or statements and taking them out of context for profit or attention or making libel can be considered use of cheap shots

Scratching, biting, hair-pulling, kicking males in the testicles and many "street fighting" techniques can be considered fighting dirty

Firing on unarmed people

Cheap shot by Maggie Fitzgerald June 28, 2011

Cheap Shot 

a cheap shot when you're fighting with someone and they hit you in the balls so that you are forced to grab them in pain

(A hits B in the balls)
A: "OOOWWWW! Cheap shot!"

Cheap Shot by Ionisis April 13, 2009

Cheap shot 

This occurs when you buy something only to discover that you could have got it cheaper somewhere else. Usually adding insult to your being as well as injury to your wallet

Ah shit, I got this dvd for £5 and now its here for £3. I hate cheap shots!

Cheap shot by xndrh1 July 28, 2009

Cheap-shot 

Scoring a hit on someone in their weak point or scoring a hit on someone when their back is turned. This is usually a sign of cowardice.

Man, I can't believe he kicked you in the nuts!
Yeah, that was a cheap-shot...

I waited for him to turn his back on me, then nailed him in the back of the head.
"Cheap-shot!" Everyone yelled.

Cheap-shot by GhettoDanIsTheMan December 22, 2013

cheap shot artist 

An individual who raises the act of taking a dishonorable, lowbrow, disrespectable action to an artform. This is accomplished either through frequent and conspicuous use of cheap shots or a particularly noteworthy low blow.

I thought I had won the bar fight but that cheap shot artist bit me on the balls.

cheap shot artist by Filmchild February 25, 2004

Channel Cheap-Shot 

(N.) Responding to a comment on a Youtube video by tying in the other party's channel name with your response. Usually done when you disagree with the other person's comment.

- GrEeNdAy_rox: Ew, metal is such bad music

- Raped.Soul.666: Who r u 2 talk? u like Greenday lol fag

- GrEeNdAy_rox: way 2 channel cheap-shot

Channel Cheap-Shot by CHCHPSHT June 23, 2011

cheapshot 

A very unfair attack, usually a surprise and aimed at the groin or stomach.

"Why is that guy on the floor?"

"He was standing behind Iggy, who spun around and hit him with a cheapshot."

cheapshot by El Singario February 14, 2006