When your 90+ grandmother has conjugal visits in a nursing home and becomes miraculously pregnant, resulting in a baby boy
by Brent Hammy June 4, 2015
When your brother marries your great grandma
by Jimmy JuJu November 17, 2017
When your son/daughter has a baby with your mom/dad, said baby becomes the your grand-sister/grand-brother.
by Nullivoid December 22, 2020