This word is said as a curse, similar to saying Oh, my God! It is not named after anything in particular. Example: Johnny wakes up one morning to see that his house has been robbed. In a state of shock, he screams Shmotent! By saying this, he has released some anger, as well as portrayed to bystanders how he is feeling.
SHMOTENT
Meaning of SHMOTENT in English
Slang English vocab. Английский сленговый словарь. 2012