No Tony
Tan-wan-e-kan welo, kola means "You have done well, my friend"
However, "Chan-ku-tay, Kola" with the right inflection could be considered to mean "Go screw an oak tree, buddy!"
Chan-ku-tay (shoot in the woods amongst the deciduous trees) Kola (friend)
There, I've exhausted my imperfect knowledge of Sioux. I only use it now-a-days when I'm standing at a checkout counter and the clerks are chatting in spanish and ignoring me - It tends to focus them.