Joke Collection Website - Joke collection - What does the sentence "Platelets: I tell you it's fun" mean? What is the source?

What does the sentence "Platelets: I tell you it's fun" mean? What is the source?

Platelets come from working cells.

The image of platelets is a group of hard-working, lovely and serious children, and netizens call them "cute" after seeing them. That's why platelets are so hot.

Cute is justice.