A Brisbane woman stabbed a male friend twice in the shower after he refused to stop masturbating in front of her children.

Defence lawyers for Kylie Louise Wilson, 28, said the mother of two "lost it" when her friend of six years, Daniel Peter Blair, went on a masturbation marathon on April 6 last year.

Whilst in the bathroom, Mr Blair, 32, began pleasuring himself, before moving to Wilson's bedroom, where he rolled around naked on her bed and continued his lewd conduct.

That is, until he was stabbed by Kylie (or Kyles, I imagine her speedy mates would call her as they passed round the snorter in between furious masturbation sessions), He freaked, called the cops, and while waiting for the boys in the blue... he turned his attention back to his blue balls.

Crown prosecutors said Mr Blair paused only to put on his shorts and flee outside to wait for police to arrive, but was again overcome by the urge.

"Despite his injury, it seems (Mr Blair) continued to masturbate while in the garage," the prosecutor said.