i know karate, i know kung fu, you mess with me, i mess with you!

I think I'm cool and I totally pwn you so don't mess with me!

One might say "i know karate, i know kung fu, you mess with me, i mess with you!" To ward off unwanted attention from bullies. Mostly unsessful.
Also, a phrase used often by geeks trying to sound cool.

by tidiris tulzwick December 14, 2008

Fu-man-chew

Eating a girl out that has the runs.

I went down on my girlfriend and she had the runs and left me with a fu-man-chew on my chin

by Eric70 September 11, 2016

Kung Fu suntan

Substantial and visible bruising (i.e. yellow or purple discoloration) over large areas of the body due to repeated impact, such as by punching or kicking.

After a month of intense training and sparring, James developed a sickly yellow Kung Fu suntan all down his shins.

by Bosonator August 17, 2019

Kung fu typing

Kung fu typing are people who do not have the guts to engage in real life conflict . A person will type anything to anyone on the Internet that they don’t know personally. A person who is only hostile on the internet.

He’s Kung Fu Typing Hostile insults on a social media political post.

by SuperXNovaX February 11, 2019

FU

A complete and utter dick move done solely out of spite, often to someone who doesn't deserve it.

My boss writing me up for standing up to a rude customer was a real FU.

by Ubeenbamboozledson January 23, 2023

Fu

When something you had done was very smooth and cool

Noa: Wow, this serve in your Volleyball Match was sooo perfect

Nino: Oh yes, it was so fu

by Hustiii November 4, 2019

Fu Balls

Female version of blue balls.

That guy at the bar had me do turned on sexually, I went home with fu balls.

by Sunni23 February 15, 2018