1) A very well endowed male.
2) Pimp
Check out those hotties hitting on that guy! He's a total Speir!
by John Williams January 22, 2004
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The act of risking one's life or safety to achieve a goal by purposefully entering dangerous, and often deadly, territory.

ORIGIN: From Lt. Col. Ronald Speirs who, during the Battle of Bastogne, ran through a German occupied town, past troops and even a tank, to meet up with a platoon and relay an order, as they had no radio. He then turned around and ran back to meet up with his squad.
"In Call of Duty yesterday, I pulled a Speirs and got a 7 killstreak."

or, can be used in non-deadly situations:

RICK: "Holy shit!"
PAUL: "What?"
RICK: "The running back just pulled a Speirs and scored a touchdown!"
by George Lulz May 22, 2011
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The coolest Canadian Youtuber in existence, this guy (also known as speirstheamazinghd on Youtube) says pointless quotes such as 'ya dingus' and 'that shit'll buff out'. he is also quite into cars, as he owns a 2017 Dodge Challenger Hellcat!
Kid #1: 'Have you heard of Keaton Speirs!?'

Kid #2: 'HeLl YeAh BiTcH!'
by NiKkCrOmPtOnCaNrAp October 5, 2017
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The best youtuber ever made. He will make you laugh even if your not a fan. Car Lover, and nicest person ever, and not self centered
Yo Speirs The Amazing HD play DOJ more.
by JohnSelig1 November 13, 2017
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