When you masterbate way too much, approx. 10+ times in 24 hours.
Jonny had a case of Daining Syndrome, his penis was bleeding.
by Morganator November 23, 2004
1 more definition
Term used to describe someone with chronic masturbation habbits. Seveteen times in one day.
Damn negro u got a mad case of daining syndrome.
by JD November 24, 2004