smutthead Share definition Flag synonomous with butthead but nicer.. sounding anyway.... tailored for smaller ears. In earshot of a toddler??? yell SMUTTHEAD!! in traffic instead. mix well with evil looks that do not draw attention to you. smutthead by your name July 26, 2003 0 0 Get merch Get the smutthead mug. Buy Now — $32.95 See more merch