Here's what it looks like when you have:

The video likely performed well due to its relatable and humorous take on family dynamics, specifically focusing on the complexities and joys of having multiple children. The use of on-screen text to explain the different scenarios in a concise and engaging way, combined with cute visuals of children, would appeal to a broad audience interested in family content.

The video shows a series of children, implying they are related in various twin and triplet configurations. The on-screen text humorously lists different types of multiple births, suggesting the children on screen represent these scenarios.