Sounding is an extreme form of play that involves inserting a rod or plug up through the penis via the urethral canal. For some, it provides a completely unique sensation and lots of pleasure, since the head of the penis and urethral canal is jam-packed with nerve endings. Sounding is also used as a means to direct prostate stimulation, while some penis-owners get off on the extreme nature of sounding. In either case, it's not something to be done on a whim, so if you're interested, again, please do your research!

In body safe silicone, the 4 Ouch! sounds are extra long, ultra lightweight and nice and flexible. All four are identical in shape, but very different in terms of width (ie. stretching/stimulating potential). Take a good look before getting started - and if you're a beginner, definitely go for the thinnest.