draikinator:

so in the update, the second phone call in alphys’s lab has papyrus mention that the bag of dog food in alphys’s lab (that feeds endogeny) was once Sans’s. probably originally his, for feeding the annoying dog that sleeps in his tornado sometimes. And, since Alphys and Sans already know eachother, and don’t seem to want anyone else to know they know eachother, sans probably knows all about the amalgamates because he was involved in the original dt expirements… with gaster and alphys, and the “you two” in entry number 17 is probably sans and alphys.

dont forget.