Babyfaces
A rounder face 'means men are more aggressive' - Telegraph
The male sex hormone testosterone makes faces more circular and now scientists have studied whether this characteristic is also linked to behaviour.
The bard got there first, but he mistrusted the thin faced ones:
Caesar:
Let me have men about me that are fat,
Sleek-headed men and such as sleep a-nights.
Yond Cassius has a lean and hungry look,
He thinks too much; such men are dangerous.
Julius Caesar Act 1, scene 2, 190–195
Maybe he was more comfortable with men who are men, not hatchet faced metrosexuals...