Fikon 

A homosexual

Person 1: Did you hear that Mark has come out as a homosexual?

Person 2: I knew it, I always got strong FikonVibes from that guy

Fikon by SalamanderSlangen14 March 31, 2019

Fiona Gallagher 

A girl on the show Shameless who is known to go through relationships quickly and make questionable decisions. However, she takes good care of her siblings. Gotta love her.

Guy: Man, Fiona Gallagher is really hot.

Guy 2: I prefer Mickey, but yeah, I guess so!
Guy: No homo.

Guy 2: No homo.

Fiona Gallagher by CumKardashian May 2, 2017

Fibonacci Fap February 

A whole month of nutting to the fibonacci sequence for example Feb 1 - 1 nut Feb 2 - 1 nut Feb 3 - 2 nuts Feb 4 - 3 nuts ultimately leading up to the last day of February where you must bust over 300k nuts in a day

Guy 1: "hey bro you doing no nut November"
Guy 2:"nah I'm training for destroy dick December and fibonacci fap February"

Fibonacci Fap February by Iraqistan November 3, 2018

Fiona 

Fiona’s are usually very funny and nice. Gets angry at some times but probably has a good reason to. Fiona’s are strong, shy at first, and loves to hang out with friends. Fiona’s are very beautiful and sexy as they grow up. They usually have hasel, blue, or green eyes. Fiona’s usually fear being embarrassed and shows it very easily. Fiona’s are not scared to show how they feel. If you have a Fiona in your life, she must really care about you! Fiona’s are very easily forgiving and hates to be in fights with friends! Treat a Fiona right. If a Fiona doesn’t like you, there is probably a good reason for her not to.

Guy #1-Who is that girl? She’s so cute!
Guy #2-Oh her? That’s Fiona!

Fiona by xfionax November 22, 2018

fionna and cake 

two characters in a show called, "Adventure Time". in the normal cartoon, its Finn and Jake. in the gender-swapped version, its Fionna and Cake.

"Fionna and Cake sure like adventuring!"

fionna and cake by CakeLikesCannablism November 28, 2013

Fibonacci Dequence 

The opposite of Fibonacci's Sequence - which is a theoretical mathematical equation of why we perceive beauty in an object or individual based upon relative characteristics.
Meaning: Ugly, repulsive, incongruous, unattractive.

Whoa he's got the Fibonacci Dequence down.

Fibonacci Dequence by Swampybaby January 1, 2018

Fibonacci Cumshot 

As the name suggests, the Fibonacci cumshot is a trail of semen taking the same shape as a Fibonacci spiral. As impossible as such a thing appears, it is easily achievable by standing on a quickly rotating platform and bringing oneself to a violent orgasm. For better results, do so in the vacuum of space. Also known as a fib, or fibbing.

Chaz: "Babe, I guarantee that was a Fibonacci Cumshot!"

Babe: "There's no way you just fibbed!"

Fibonacci Cumshot by colinmochrie March 16, 2014