Sleepover Insomnia Share definition Flag Going to bed so late at a sleepover that you can't get to sleep the next night. Sarah went to bed at 4 am at the sleepover last night. Now she has Sleepover Insomnia. Sleepover Insomnia by OneOfTheFewNorthDakotansLeft October 23, 2010 0 0 Get merch Get the Sleepover Insomnia mug. Buy Now — $32.95 See more merch