Joke about male vs female behavior using worn vs new toothbrushes

Modern society: there's no difference between male and female behaviour
Meanwhile toothbrushes in a bathroom:

This meme consists of text at the top followed by a photograph of two toothbrushes in a bathroom. The opening text states 'Modern society: there's no difference between male and female behaviour', then the next line reads 'Meanwhile toothbrushes in a bathroom:'. The photo shows two toothbrushes placed in a smoked glass ribbed cup with a gold base, sitting on a white countertop against a marble-patterned wall. One toothbrush has extremely frayed, splayed, worn-out bristles, stereotyped as belonging to a man, while the other toothbrush has neat, barely worn, intact bristles, stereotyped as belonging to a woman. The joke satirically implies that there is a clear difference in behavior between men and women as demonstrated by how aggressively each uses their toothbrush, playing on common gendered stereotypes of how people care for personal items.

This meme was originally posted to Reddit as a user-created meme per the provided source information. It uses a common relatable everyday observation comedic format, referencing widely shared stereotypes about differences in how men and women treat household items, and is shared in Reddit meme communities for lighthearted humor.