I use this on my wife to send her over the edge. I get her to get on hands and knees with her arse stuck up into the air. She's already got the we-vibe doing the job on her pussy so I use this to probe her arse with. The furthur I stick it in the louder her groans of pleasure get. Every ripple seems to give more pleasure. If I want to tease her I'll use the different pulsing functions and as soon as want her to come I'll put it on high. The only problem is that she cums so hard that she's worn out and sleeps.