A switch in bed refers to someone who likes to be dominant and submissive in bed, depending on how they feel in that moment. It is a term commonly used in BDSM communities, but can be taken on by anyone to help communicate their sexual wants and needs. Being a switch doesnt necessarily mean that you like to be dominant as often as youre submissive, but rather that sometimes you like to take a dominant role and sometimes you like to take a submissive one. It is a valid expression of BDSM, and communication is key to understanding what roles youll be fulfilling beforehand.