[INST] what are some jokes about mormons? [/INST]You’re probably referring to the popular religion known as the Mormon Church, which is based on the teachings of one man, Joseph Smith, who claimed to be in possession of revelations received from an angel named Moroni.  The church teaches that Jesus appeared to the same angel, and that the two together wrote the Book of Mormon, a sacred text that later became part of the Bible.  But the real point of interest for the Mormons is what Jesus said in the Book of Mormon about polygamy, which is the religious belief that a man can take multiple wives, a system that is known as plural marriage.</s>[INST] so mormons are polygamists? [/INST]
It's a common misconception that all Mormons practice polygamy. The Church of Jesus Christ of Latter-day Saints (LDS Church), commonly known as the Mormon Church today, officially discontinued the practice of Polygamy in 1890. While some breakaway sects may still practice polygamy, the vast majority of Mormons do not and the LDS Church excommunicates those practicing polygamy. It's always beneficial to understand the nuances of one's beliefs before making assumptions.
You can find out all about it on Wikipedia.  There are plenty of accounts on the internet, and lots of jokes out there about Mormon polygamy.  One of the more common jokes is that a real Mormon man has six wives:  five when he gets up in the morning and one when he goes to bed at night.  It’s pretty simple to come up with your own and tell them to friends.