Silly ol' joke. The brown bush on the lower left corner is Achille's head and the guy in front of him is Agamemnon.
Agamemnon is saying "But I shall take Briseide, so that you shall know how stronger then you I am"
At which point Achilles loses his temper and apostrophize him thus:
"Oh drunken men! Dogface! Deerheart! [...]"

Yep that Iliad allright, if you don't trust me search book 1 verse 225.