An Instagram picture caption is text that is used to name or identify a picture that is posted to Instagram. There are a lot of Instagram picture caption quotes out there which show the text can be funny, serious, or even angry at times. The caption that is used with a photo should reflect what is going on or who is in the picture, or describe the circumstances which occurred when the picture was snapped. An Instagram picture caption can be funny, and this appeals to many people who enjoy something humorous to brighten their day a little. There are Instagram users who put a lot of thought into the caption that they give each picture but others just use whatever comes to mind immediately.