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1.
Death that is caused by the use or misuse of erectile dysfunction medication.

This may be the result of the user overdosing on the medication or by having a severe reaction to said medication.

The corpse may, or may not, still have an erection after death, dependent on when the corpse is found.
"Did you hear about John? He took 5 Viagra tablets causing death by lethal erection. Such a shame, you could still see a lump in the crotch region as he was taken out in a body bag."
by kritikal November 07, 2012