a type of protective underwear (diapers) that kids and teens who wet the bed use to stay dry; goodnites have a cloth like layer and look and feel like real underwear; has an absorbant inner pad to soak up wetness; the only thing bad about them is that they sometimes leak, but leak gaurds on new versions do help
when you are aware that someone is already asleep but you didn't tell them goodnight. you say "Goodnitten" This is technically the word you would say to someone who is already asleep, normally done over social media