Top Definition
An extremely good blow job.
Cathy used those great DSL'S to give me a "knee buckler" last night.
by Eman3737 November 29, 2004
An intense orgasm
"I didn't fap or have sex for two whole weeks. When I finally came, it was a knee-buckler!"
by Michael Michael Motorcycle July 31, 2013

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.