Binocular rivalry and orgasms

See this paper:
J.D. Pettigrew (2005. Laughter abolishes binocular rivalry. Clinical and Experimental Optometry, 88 , 39:45.

You have to read to the end to find this gem:
"The results presented here are supported by informal results showing that both binocular rivalry and the interhemi-spheric nasal cycle are also interrupted by the laughter-like sudden shift in motivation associated with orgasm (JD Pettigrew, unpublished observations)."