Any product claiming to extend or expand the penis, produce longer lasting or firmer erections, or increase ejaculate volume that is not produced by a reputable pharmaceutical company (and thus of dubious safety and efficacy). The subject of much of the spam you receive and (sensibly) discard.
Hey, check out this spam. The writers claim to be able to cure any illness, but that seems like a stretch when they haven't mastered spelling. Must be hawking trouser snake oil.