WSG is a popular acronym on Snapchat. According to Urban Dictionary, the top definition of WSG is What’s Good. WSG is generally used as a conversation starter or inquiry between two individuals. It is a popular way to start a conversation on Snapchat because it is less formal than starting with a question such as “Hey, how are you?” or “What’s up?”. WSG gives the conversation a more relaxed feel and allows the two people to get to know each other better.