Top definition
Yes, the Sans of the funny song Megalovania. Sanscest is the name that the fandom gave to the ships between a Sans and another Sans from different universes/ AU's
-Hey, i really like to ship Sans from Underfell x Sans from Underswap-
-Wait, isn't it Sanscest?, because they're both a Sans but from a different universe-
-Well, Jeremy, yes it is, if saying that they're both a Sans wasn't obvious that is Sanscest
-Wait, isn't it Sanscest?, because they're both a Sans but from a different universe-
-Well, Jeremy, yes it is, if saying that they're both a Sans wasn't obvious that is Sanscest
by Neith<3 July 27, 2019