When you're so thrilled or excited, your best friend suggests doing something ABSOLUTELY stupid, and you go along with it because...well...

Why the fuck not?
Why did you shoot fireworks off your yacht while on a bender? It's September.
Why the fuck not?
by DarthKieduss August 1, 2019
What you say when you're in a tense situation and give in to peer pressure because you want friends that badly.
Why the fuck not, man?

Oh, hell...why the fuck not.

You know what? Why the fuck not.
by Dragonkin56 February 22, 2018
a kind of phrase people sing when someone else is lying or making up things he or she didn't do.
A: Bro did you fuck that bitch last night? *finds out from girl that he didn't smash*
B: Bruh you know I did. I'm the man!
A: Why the fuck you lying? why you always lying? Hmm oh my God, stop fucking lying!
by sanzil September 23, 2015
A great way to start a conversation with your dad
"Hey dad, why the fuck my Peepee Hard?"
"You're my daughter"
"I have questions my body's changing"
"This is normal"
by Mr Yelah September 17, 2017
A way of saying "why would you do that?" It is exclaimed in a way for extra effect.
Person 1: I killed her
Person 2: Why the Fuck would you do that?
by BraidMyPubes June 10, 2012