dumbbell, dunce

PINHEAD
WordClue
BUGLEcone, funnel
DOOFUSpinhead, dumbbell
FATHEADdunce, lout
TODDLERtraffic cone
DUMBBELLpinhead, dunce
BLOCKHEADdunce, dolt
LAMEBRAINdunce, blockhead
AIRHEADdumb blonde
STUPIDITYdumbness