Shearer's XXX Team:
While at the team creation screen enter SEXY 
FOOTBALL as a custom team name. Under "CHT1" 
Shearer's XXX team will appear. 

Big Head Mode:
While at the team creation screen enter 
TOP HATS as a custom team name. 

Bonus Teams:
To unlock 24 more teams enter PREM CLUBS at
the team creation screen. 

Joke Teams:
To unlock 24 funny teams enter TFF TEAMS at
the team creation screen.