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