Stimpy rhymes with:
skimpy, wimpee, wimpy, bumpy, campi, campy, ciampi, clumpy, dumpy, empey, empie, frumpy, grumpy, jumpy, lampi, lumpy, pompey, rampey, rampy, sampey, skimpy, swampy, tempe, wimpee, wimpy
Stimpy sounds like:
stamp, stanhope, steinhoff, stomp, stumbo, stump, stumpe, stumpf, stumpff, stumph, stumpo, stumpp