sniper's poor dental

An Australian dentist advise

The entire continent of Australia is a Dentist. (Not the people living there, but the actual landmass. I don't know either.)

Sniper is Australia, oh, he's also a dentist.

I'm thinking...cool heavy in a black hat, waving at some cool cat.

Heavy steals Demoman's hat to keep his head warm.

friendship Detected, now you all must pay the price

Hebby does the imagination rainbow but instead of imagination its friends and a little heart is also on his vest.

The rainbow strings take control of Heavy and tell him to kill them all. Heavy agrees with this.