Top Definition
A cute little hacker. So damn cute like the popular pokemon pikachu. It usually says stuff like, "Hacka, Hacka." And before you know it, you have been hacked in any way possible.
Dude: Man I feel so messed up, I gave that girl all I own.

Dudes Friend: I told you dude, she was just a hackachu.

Dude: Yeah, she was so damn cute I did not know what hit me!
by Hacka Hacka February 07, 2011

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