Firebug rhymes with:
jitterbug, humbug, jitterbug, ladybug, abzug, earplug, humbug, jitterbug, ladybug, superdrug, tanjug
Firebug sounds like:
fairfax, farabaugh, feverfews, firebaugh, firebush, firebush's, forbes, forbes', forbes's, forbeses, forbess, forbis, forbus, forbush, fraph's, freebies, freehoff's, furbish, furbishes, furbush