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It's been a while since I drew/submitted a BE image. And as some of you have noticed, I'm currently in a boob mood, so I felt like drawing this. It started as a blue-line doodle in OpenCanvas chat, but I liked this so much that I lined it and put more detail into it than I originally planned. Mini Matt wasn't even there before.
You might notice that there's no milk in sight, yet Mattie's definitely turning into her Meushi form. In the Ego Trigger concept, everyone has a natural trigger for their Ego, and an assist, usually a tangible object. Mattie's trigger is when she sees something cute or feels maternal, but that's something she's not too comfortable with yet, so she relies on her assist, which is milk. However, Matt's Ego is the essence of cute, and his trigger is seeing sexy things or feeling dependent. Their triggers are pretty much connected, so if one of them ends up triggering their Ego, the other one ends up getting triggered by the result. Here, Mattie saw Mini Matt, and that caused it for her. You'd think she'd be used to going Meushi, and she is, but just not by this method.
On a side note, I'm really happy with how this came out; little details like the lineart, folds, etc. came together nicely. I tried a little effect by making bits of her breasts flowing between her fingers to emphasize dimension, and I like how it turned out. I'll definitely give this a shot at color later on, maybe after this weekend.
tl;dr : Mattie can go Meushi when she sees cute things.