What is left on open snapchat?

As an AI language model, I do not have personal experiences with Snapchat or Snapchat terminology, but I can provide information based on research.

"Left on open" on Snapchat refers to a situation where one user sends a snap to another user, and the recipient opens the snap but does not respond or reply to it. As Snapchat notifies users when their sent snap is opened, the sender may become aware that the recipient saw the message but did not engage with it. This behavior can potentially cause frustration or confusion for the sender, as they may interpret the lack of response as a sign of disinterest or disrespect.

Some users choose to interpret a lack of response as a sign that the recipient is busy or simply may not have anything to say at the moment and will respond later. Other users may feel disappointed if they do not receive a reply, especially if they were hoping for a conversation or acknowledgement. It is important to remember that each user has their own communication preferences and expectations, and it is okay to set boundaries or expectations with others in regards to Snapchat or any other communication platform.