It's when you have a late night conversation (usually while on the phone), while very sleepy. The next morning, you forget what you were talking about towards the end of the conversation.
Guy 2: Uhh... No, I think I have sleepnesia...
Isulat ang iyong imeyl adres sa ibaba upang makuha ang aming Libreng Urban Word of the Day araw- araw!
Ang mga sulat are galing sa email@example.com. Kailanma'y hindi kami magpapadala ng spam sa inyo.