Knuckle Spikes

Rings that you put on your fingers which have pointy spikes on them.

Bring your knuckle spikes, and let's fight.

Football spike

When you sit on the toilet to take a shit, a little nugget gets forced out splashing the water below similar to a football being spiked in the endzone.

Dude, I had a nice football spike in the toilet today. My cheeks are so wet.

Spike spike

When you fart and it feels spiky

I did a lovely spike spike

Anal Spike

Its when a guy doesn't accept no as an answer when a girl says no to anal but during sex he sticks his dick in her ass any ways!

"ooooh yes baby"
"oh wait till you feel this"
"AAAWWWWW!!! you fucking anal spiked me"

Spiked Shelling

The act of aiming only to wreck/spinning out the first place person in a racing video game; much like the spiked shell from Mario Kart. Often frowned upon and seen as immature.

John: Me and Mike spent all last night spiked shelling in Grid. We almost took out the whole field, one by one.

Greg: You're a douche. Grow up.

Spike (MLP)

Everyone's Cute Dragon from MLP!
He evens got a crush on Rarity!

Spike: *falls in love while seeing rarity*
Rarity: what a cute dragon!
(Spike (MLP)

Hobo Spike

An approximately 2' long piece of metal/spike, which hobos use to pry open a freight-train boxcar so that they can "hop a train" (i.e. illegally ride a freight-train to the hobo's destination).

Sammy's hobo spike not only opens boxcar doors, it also opens cans of beans and cans of beer!