Big Mac had always wanted a big family. With Applejack and Applebloom gone most of the time, he was often left alone at the farm to just do his own thing.

This meant when he eventually got married and Twilight fell pregnant, he was extremely excited and definitely didn’t leave Twi alone. Not that Twi minded too much; she was bedridden for almost all of her pregnancies, and having some company was nice. She especially found it endearing when Mac would talk to the foal.

Here, Twi is pregnant with Dusk, and Mac seems intent on carrying out a one-sided conversation with Twi’s stomach. Interesting.