This hypnosis file is a bit evil and a bit fun.  It is triggered by hearing or seeing the word Moo or by seeing a cow.  When it does you mind goes placid and you feel yourself becoming a HuCow Udders and all.  While that might normally be a bit dangerous it has a lot of safeties put in so that if you aren't in a safe place to be a cow all you might do is moo yourself which people do all the time.  If the real world calls you'll go right back to being yourself but the call of the Moo is never far away.