Best definition
wtfriday is a weekly holiday celebrating the end of a long week and preparing oneself for an awesome weekend by

making a point to be mind fucked and or making sure someone else gets mind fucked.

You’re getting ready for work and you google “toddler dressed like little wayne” #wtfriday

you’re driving in your car, and rickroll the person next to you at a red light. #wtfriday

If your ritual doesn’t make you, or someone else say “WTF?”, then you’re not doing it right.