Skullcap 

A sexual position in which the receiver is lying down face up, the giver places his scrotum on the top of their head like a cap, with their penis going down over the nose, like the nose guard of a helmet, ending with the head in the receivers mouth.
Can also be done with the receiver sitting and the giver standing/squatting above them.

Guy #1: dude when she laid down I so planted my junk on her head and gave her a nice sweaty skullcap!

Guy #2: Nice man! *offers hand for high five*

Skullcap by N-Tako April 28, 2009

skullcapped 

When one gets a headshot with a high caliber weapon in reference to the fact that the victim’s skull would have it’s top blown off.

Aww man, I got skullcapped by that sniper in the bushes

JFK got skullcapped from the Texas Schoolbook Depository

skullcapped by Grap3Ape August 3, 2020

skull cap

A thin, skin-tight hat piece.

skull cap by Anonymous January 30, 2003

Skullcandy Left

The near legendary malfunction in any and all pairs of skullcandy headphones that always causes the left speaker to blowout acompletely and severely limit the function of the right. May also be referred to as Crappy Headphone Syndrome or CHS.

"Im lucky the warranty on these headphones cover Skullcandy Left."

Male 1: Hey, the left speaker in my headphone blew out all of a sudden.
Male 2: My friend, your headphones now have Skullcandy Left. I hope your warranty is still valid.

Skullcandy Left by anon36 December 5, 2010

Skillcap 

The maximum level of performance that can be achieved using the given toolset.

Practicing an activity enough using mindfulness to examine results and create better action for next time, in theory, ones skill in the activity will eventually reach skillcap

Skillcap by Tannhr August 12, 2018

skullaphobia 

the fear of skulls. he suffers from skullophobia

he suffers from skullaphobia

skullaphobia by bandana darren February 7, 2019

skullcandy 

the only kind of headphones that you can get in blue, yellow, green, red, and pink.

my new skullcandy headphones have 8 different colors on them.

skullcandy by Hax0r The Great May 23, 2010