From Homestar Runner Wiki
The Teach is a blue sock puppet manipulated by Strong Mad that bears a strong resemblance to The Cheat. The Teach contributes to The Git Outcha Seat Sound, a Geddup Noise knockoff (created by Strong Bad, apparently).
The name "The Teach" is an anagram (and phonetic reversal) of "The Cheat".
- Debut: Email geddup noise