Spark plug

When you insert a rod of tinfoil in your urethra, and proceed to insert your erect penis in a microwave.

Dude, after I lost that bet with Cassie she made me do a spark plug. I accidently set an African orphanage on fire.

by sdascoli October 19, 2017

Mechanicsburg Spark Plug

Lesser known sexual activity between two women consisting of the connection of the positive and negative terminals of a car battery to the women's respective clitoral piercings, followed by a vigorous scissoring session and resulting in an electrifying, spark-filled experience for both parties.

Lacey and June lit up the room last night, as their Die Hard-enhanced metallic muffs engaged in a Mechanicsburg Spark Plug.

by J.J. Jingleheimerschmidt February 25, 2009

Spark Plug Blowjob

The repayment your partner gives you for properly tuning up their car.

"I still owe you that spark plug blowjob"

by tictactoe81 June 17, 2012

Spark Plugging

When you spend time with friends that ignite the spark in you and you ignite the spark in them.

The best conversations are the ones when we’re spark plugging together !

by MBM2020 June 3, 2022

Spark plug

The action of lighting a sparkler and sticking it in your anus as if it is a dildo.

I spark plugged myself last night

by Diggleton Faddlebuck January 7, 2025

German spark plug

The act of pulling your penis out of a girls butthole while she farts out your sperm

“Yea I just gave Linda German spark plug

by Kyle hutch July 9, 2025

spark plug

A motörhead’s buttplug. sometimes gay people where them on a necklace

james was feeling lonely so he took his spark plug off his necklace and shoved up his ass

by shitb0x October 21, 2019