Mom: Hey josh what's that noise?
Josh: Im erfing someone mom...
Mom: Ok josh just do what your doing...
Josh: THanks mom!
by CockBlocker99 December 8, 2010
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1. To be high out of you mind.
2. To be blown hard or fucked hard by a bitch
1. Dude last night i smoked a 50 and got so erfed.
2. Yo my girl erfed me so hard last night i cant stand straight.
by Kevin Forero May 8, 2008
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there are alot of people on erf.
by nick April 29, 2006
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When something is lit or cool or fun
I was at a party the other day, it was bear erf.
by Agua February 3, 2022
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A word that signifies frusteration.
Erf, I've fallen down and I can't get up!
by Mer October 18, 2003
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The error function. Computer programs such as Mathematica and Maple incorrectly evaluate about 95% of integrals taken over all space. When the program fails to recognize an integral, it automatically spits out "erf" for an unknown reason.
Person 1: Dude, we have a Quantum Mechanics homework set due in 30 minutes, & I can't figure out how to evaluate this integral.
Person 2: Don't worry, we'll put it into Maple!
Maple: Erf erf erf erf erf...
Professor: epic fail.
by MorvAreed April 14, 2009
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