sans reads a dictionary and finds out that "Sans" means "Without".

Sans thinks it's nice that his name means 'Without' in French

sans' name means 'without'

Undyne being confused by sans' name

sans /sanz/ preposition literary humorous without. wh?? without? what is he missing?

frisk says "you could say he's SANS a brother." while having that red eye thing that makes it 100% spookier and smiling like an evil person

frisk is making a pun to sans at the final judgment hall after a genocide route.

metamorphosis?

the cycle of life