I think it's something built in with the eyebrows. Everyone else with them seems to have the tsun as well.

He probably struggles to find anything to compliment. Or rather, something he likes that he can admit to liking.

"Kiwi, I really... like your sheep."
"Out."
"The Tasman Sea is very nice."
"Out, now."
"Could be a little smaller."
"I'm not doing it, go away."
"I like how you're practically my territory as far as everyone else cares."
"Now I actually want to hurt you."

He tries so hard, the poor dear.