σαυλοπρωκτιάω
From LSJ
τοῦ δὲ πολέμου οἱ καιροὶ οὐ μενετοί → in war, opportunities won't wait | the chances of war will not wait (Thucydides 1.142.2)
English (LSJ)
A walk in a swaggering way, so as to make the hinder parts sway to and fro, Ar.V.1173.