When a UUT doesn't work regardless of all the troubleshooting you've done or changes you made; then suddenly it works.
Me: I tried everything I could think of but that Vishay DAQ stll will not communicate with the software.
JAM: WTF
1. World Tae Kwon Do Federation
2. What the fuck
1. Hey! Are you coming to WTF this year?
2. wtf is your problem?
A slang term for an internet phrase, "What the fuck".
WTF DID YOU DO SON!!??//111!!!
WTF stands for what the fuck. What you want to say to Donald Trump
Donald Trump:l will make America great again
You:WTF are you saying . Get your shit off the stage