What's on your mug?

The act of two males rubbing penises together to simulate two sticks attempting to start a fire.

I have a serious blister from sparking with Arnold last night.

By Shaft12345

Having relations which constitute an extra-marital affair, which may hold consequences such as a "really uncomfortable news conference".

South Carolina Governor Mark Sanford's sparking with his Argentine mistress.

By Initforthelulz

To release shells or rounds from the clip of a sidearm, automatic or semiautomatic weapon.

He unloaded a whole clip on that nigga after he started sparking the glock.

By BrklynsFynest

The act of having or being subjected to an incredibly awkward crush; Similar to sparks trying to ignite a wet rag except there is no chemical reaction to start flames (desire)

You: "Dude, they were totally sparking on you!" Me: "Yeah? well I piss on their teenage infatuation"

By Afireinrome

makeing out

I got Denise and Richard sparking in the living room.

By Cathy