Little girl syndrome 

Being immature over a small incident. Also holding a grudge or being petty when it’s unnecessary.

Why do you have little girl syndrome?

Little girl syndrome by Bigfacts420 July 31, 2018

Cute Little Blonde Girl Syndrome 

An unhealthy obsession with cute little blonde girls, and the desire to eat their hair.

He was going to come out with us, but his Cute Little Blonde Girl syndrome flaired up so he went to the freshman dorms and pretended his car broke down. For 6 consecutive hours.

Cute Little Blonde Girl Syndrome by JoshHammerCraft April 22, 2011

Little Girl Leg Syndrome 

A condition in middle-age men where the power generated by their legs in cycling, running, or really any sport, is equivalent to the power output of an 8-year-old girl.

Dude, why can't you keep up?

Come one, man! You know I have Little Girl Leg Syndrome.

Little Girl Leg Syndrome by Michael S Stevens January 30, 2018