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1.
Meaning you really want to hit someone so your finger inches to slap someone like in romeo and juliet.

or in more current times an itchy finger is saying i want to pull the trigger on this gun and kill someone.
Storti: give me the drugs

Griffith: nahh not till you give me the money

Storti: hey bitch i gotta itchy finger for blood right now so just give me my shit.
by womantor June 01, 2009

Words related to itchy finger

finger fingers inchy finger itchy itchy fingers
 
2.
the most annoying itch
more annyoing than itchy ballz and obviously horrible spelling errors
omfg!itchyfingerz are t3h suk!
by DFS February 12, 2005