"Periodt" or "Period" is a slang word people use to add emphasis to their statement and get the point across. If you use this extra word, people will focus or listen to you. According to Sanya S. "To me, it’s kind of like a way to encourage my friends with a twist." This trend is used to emphasize statements, and it can be used with friends, classmates, work, etc. Use this trend when you want to make a point or to encourage someone!