g-gasm
Direct stimulation of the g-spot will produce waves of intense orgasm. Different than traditional clit orgasms in that they are more of a whole body experience. Hard to walk or even know your name after about 10 or 20 of these babys.
I rubbed Sallys G-spot til she had a g-gasm - she told me to stop, but I slapped her on the ass and kept rubbing 'till she had another g-gasm and another ... then another ... then one more ...