In [[../../Books/OrderGoblet of theFire/Chapter Phoenix37|Harry Potter and the OrderGoblet of the PhoenixFire]], we learn that combining jinxes can have unexpected effects – apparently, [[../../Characters/Harry Potter|Harry]]'s Furnunculus curse combines with [[../../Characters/George Weasley|George]]'s [[../Jelly legs/]] curse to afflict [[../../Characters/Vincent Crabbe|Crabbe]] with little tentacles all over his face. We can't be certain that the boils that afflicted Goyle in the earlier episode were the intended effect; the spell may well have been modified by hitting the Densaugeo spell.