Moto-boner 

When the motivation gives you a massive erection. Both men and women can have moto-boners.

As Sergeant Brown mowed down some Haji faget fucks with his .50 caliber machine gun he began to grow a moto-boner. He then proceeded to spit the juices from his chewing tobacco onto his hand and slowly move his hand down his pants.

Moto-boner by Fuk_ISIS February 24, 2018

Motoboner 

When you're so motivated you get a boner.

"Why's Jason excited"

"Tim gave him a speech and now he's got a motoboner."

Motoboner by Lord Dez December 13, 2013

motoboner 

An erection sustained while riding a motorcycle.

"I had a rough ride into work this morning. I popped a wicked motoboner."

motoboner by Lone * June 27, 2008

motorboner 

Like motorboating, except instead of tits, it's with your boner.

This girl motorbonered me last night. Shit was so cash.

motorboner by kholms89 December 4, 2010

motorboner 

Boner, while riding on a motorcycle, caused by seeing a hot chick riding a motorcycle.

That fox on her crotch rocket gave me such a huge motorboner, that it took me half an hour extra to get my motor pants off.

motorboner by MotorJ May 12, 2016