Doofus
Definition:One who is strange and socially unacceptable
Example:
Teddy: You're a doofus!!
Sally: Your mom is a doofus.
WARNING: These cruel, insensitive and politically incorrect insults are presented for informative purposes only! Do not use in real life, even if your classmates do smell like poop, behave oddly, see poorly or suck up to the teacher.