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1.
Male body type combining skinny, muscular and very low bodyfat with well defined abs. Used recently in fitness forums. Examples are Taylor Lautner, Brad Pitt. Suggested by many as the ideal male bodytype because it is not threatening to females like huge muscles.
I'm going to go ottermode this spring by working out and doing lots of cardio.
by RickCain2320 December 26, 2009
 
2.
The opposite of Bear Mode. Peak physical condition for someone who wishes to remain skinny yet tone.
Otter Mode: Michael Phelps.
by Rattasauce April 29, 2011