An Olde Yeller is defined as receiving felatio from your lady friend while she has a mouth filled with Pop-Rocks and Mountain Dew causing her to foam at the mouth. Upon getting close to climaxing the male should withraw from her mouth and shoot her right between the eyes, thus mimicking the putting down of Olde Yeller.
My wife was giving me an Olde Yeller last night and bit me. I ended up having to put the bitch down. The moral to the story is "Never Bite the GLAND that feeds you!!"