A shortening of "bullshit". When someone talks bull, the reply is "sht" or even "st".
Can be used in the same fashion as "not", i.e. negating the sentence that has just been spoken.
(noun) referring to a person that is a douchey host or hostess while entertaining guests. Someone who fails to be a good host or hostess. A lackadaisical host.
During our trip to Boston, Jean didn't have anything planned for us to do on Saturday. She was being a real doh'sht.