https://en.wikipedia.org/wiki/Gene_LeBell#Conflict_with_Steven_Seagal posted:

While serving as stunt coordinator for the film Out for Justice, starring Steven Seagal, Seagal stated that due to his aikido training he was 'immune' to being choked unconscious. It has been alleged that at some point LeBell heard about the claim and gave Seagal the opportunity to prove it. LeBell is said to have placed his arms around Seagal's neck, and once Seagal said "go", proceeded to choke him unconscious, with Seagal losing control of his bowels.