T-boning 

When you having sex with a girl and pull out too far then miss and bend you penis

Me: Yo Fabs I was banging this bird then ended up T-boning he
Fabs: mate that must have been well painful

T-boning by Posh Twat September 22, 2015

T-Boning 

When you are both fucking whilst tposing, last one to cum has to tpose for 10 minutes and let the other person do what they want to you sexually.

Guy 1: ‘hey so you and your girl been up to anything new recently?’

Guy 2: ‘yeah, just tried out t-boning, 10 minutes of free time to me!’

T-Boning by DipDipTheRapper November 13, 2019

T-boning 

When one man rams his penis into the penis of another man at a 90-degree angle.

Jeff and I got really hot last night. We were totally t-boning by the fire.

T-boning by whcgonzo November 8, 2011

Boning a T-Rex 

Boning a T-Rex is typically an excuse on why you can't go out to do fun activities with friends, because you're a total introvert.

You: Dude, sorry I can't go out tonight.
Friend: Ok, why tho?
You: I'm boning a t-rex

Boning a T-Rex by SpankMama24 April 27, 2017

T-Bonin' 

This is a more specific instance of standard bonin' where one of the parties involved is named T-Bone.

Last night I was T-Bonin' Liz for nearly 3 minutes!

T-Bonin' by T-Bone February 26, 2004

T-Bonking 

the act of texting, perhaps in a sexual manner

"Hey Jake, who are you T-Bonking?"

"I really want to get her number so we can T-Bonk later"

T-Bonking by rachu1234 December 19, 2008