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.
by whcgonzo November 8, 2011
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During a threesome consisting of three males of the homosexual orientation, when all three erect penises meet at the same time (usually in a T formation) they all ejaculate on each other for sexual pleasure.
That T-Bone with Rico and Andre last night was so mind blowing!
by Cha-chingy yumYUM January 4, 2008
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The process of one's willy, whilst erect, being slapped across another's face. Usually resulting in a nice big red slap-mark.

A new term originating from Buckinghamshire
"oh dear, i have just been T-boned by my best friend's dad!"
by rainmaker666 June 10, 2006
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The act of double teaming a slut, with a friend who's name happens to start with t.
by Nicoli Kornachefsky March 5, 2004
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