When you need to know if you friend is in the call still, but he's on the wheelchair so when you say the words "Wheelchair Check" your friend will come wheeling down in his sped-chair to answer your pleading call
"Is John still here?"
"Wheelchair check!"
When a basketball is shot in the game NBA 2k: the highest and most accurate shot skill level is Green, "FN" standing for "fuck nigga" in shit-talk across video games.
You wont make that shot you're ass
"GREEN FN"