The first time my grandma met DH, she commented that he had a "small face". It's been a running joke since then because we can't figure it out! How is it measured? Is it all about the shape?

I haven't given it any thought until now - I called my grandma and as she was talking about being excited to meet LO, she mentioned how she'll be super cute, and will look like DH with a SMALL FACE?!!! Wtf?!!!

My face is much smaller than my husband's so I just don't get it! I mean his head is ginormous compared to mine. Is it about cheeks?

Can anyone shed some light on this?