Some of what my friend said above might be regional terminology. So for those from other areas, I'll "translate" as best I can. Correct me if I am wrong or add to this as needed...
Bug or Talkie Tooter - A remote control device worn on your belt which causes a horn on the yarder to "toot" and operates the yarder.
http://www.talkietooter.ca
Choker -
http://www.vannattabros.com/iron39.html
Blow three to the yarder - Three "Toots".
Turn - Logs
Blow two to the yarder - Two "Toots".
Hup ho - Yarder reels in cables fast - logs go up the hill fast.
Stay out of the Bite - The yarder cable can be down on the ground but not directly in line with the top and bottom portion of the yarder. So when the cable is reeled in, the cable will move "sideways" at first. If you are standing on the side toward which it will move (the "bite"), the cable could injure you. Thus stay out of that area or "Stay out of the Bite". So this is something they say when finishing a conversation with someone - Like "take care", "have a good day", etc.
And so far as not taking time to eat lunch, he said they would rather snack as they work and get home a half hour early.