The worst part is that he procreated! Thereby eliminating doubt to being "F%ckin Retarded"; however, his mental capacities in dealing with reality has come under scrutiny more and more.
You say potato, I say po-TAT-o....
Mentally challenged, retarded, backward, birdbrained, defective, dim, dim-witted, dopey, dull, dumbbell, dumbo, dumdum, dummy, exceptional, feeble-minded, gorked, half-witted, held back, imbecile, lamebrained, mentally defective, moronic, numbskull, opaque, pinhead, retardo, sappy, simple, simple-minded, slow, slow-witted, stupid, subnormal, touched, underachieving, weak, yo-yo all amount to this "Professor"!