Slitting the middle of your dick and having another dick inserted inside of the slit. While in the other dick this person then pisses into it so the other person will be able to piss out another persons piss.
Me and Eric were totally splitting lumber last night...

Yea i know ive heard that Eric is a total slut i heard he did Pb and J with DAN!
by Notkyle August 2, 2009
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The highly disciplined art of simultaneously defecating and masturbating.
One thing Cliff really enjoys is a good lumber-jacking.
by Douglas Thorneloe January 20, 2008
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This is a euphemism for the state in which someone is in need of a bowel movement, i.e. that feeling that you need to take a crap.
Man, I have been hauling lumber all day, I don't know how much longer I can hold it.
by Brian Rooker October 24, 2006
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A chunky jolly fellow usual by the name LJ or chris.
Gets a buzz out of cutting down tree's then retreating to there dark lair where they drink stolen Booze and play on holographic phones.
guy:Hey look its the lumber jack
LJ: alreet
guy: Hint!
LJ: i love you.
guy: Go cut down trees
by Mcpwnzorage September 24, 2009
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The maid was aghast when she found the sleeping lumberjack, snoring, his slumber lumber proudly in view.
by Dan Farman May 10, 2004
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1 a horny(lumber) man with an STD(dangerous) so making him dangerous lumber
2 someone who always hits someone with a baseball while they're batting and hit someone
1 that dangerous lumber gave megan AIDS
2 that dangerous lumber killed off my whole team
by PlayDohMan April 25, 2004
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The act of getting a penile erection.

'Hey Bob, this road kill... its still warm!'

'Time to lumber up boy!'
'Bob, this roadkill...its still warm!'
'Lumber up boy! Time to become a man!'
by Bearforce1 December 18, 2014
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