Overlapping quirks seems to mean that the two professors have habits that are amusing when they<b> act them out</b> together.<br/><br/>Could you please explain to me what "act them out" together means here? <br/><br/>Source : <a href="http://www.EnglishForward.com/English/BaritonesOverlappingQuirks/mnxnw/post.htm"> </a>