infernal
pestilent
cruddy
like fingernails on a chalkboard
cancer
scunnersome
pillocky
chagrining
creepy
niggling
raucous
dumb as a bag of hammers
chumpy
itchsome
nippy
provoking
annoyant
AIDS
butt-munching
pestiferous
dumb as a doorknob
dumber than a box of rocks
thick as two short planks
dumb as a box of rocks
thick as a plank
pesty
one brick short of a full load
bull
numbnut
retardical
fucked-up
thick
dumbbutt
dumb as an ox
simpleminded
dumbassed
numbskulled
dumb
shit-for-brains
dumb as dirt
dumb as a post
retarded
dumber than a rock
rock-dumb
thick as a whale omelette
dumb as a stump
thick as pig shit