Ouch. OUCH.
Early Basic Models
Via: retronaut.com
Spermatorrhoea Ring
In the late 1800s, masturbation was thougtht to cause everything from insanity to acne. So, it HAD to be deterred.
Via: retronaut.com
More Spermatorrhoea Rings
The Jugnum Penis
Designed to deter wet dreams by causing enough pain to waken the sleeper if an erection threatened. It looks an awful lot like a Spermatorrhoea Ring — probably all kinds of competing erection prevention patents around.
Via: newscientist.com