In my first year turkey hunting. After a morning hunt another guy in the camp asked how the morning went for me. Told him that I found a bird gobbling that morning. Setup and did some calling to the bird. The bird was gobbling back and could tell he was closing the distance. Then the bird stopped gobbling, went quite. Paused a minute and ponder if I should ask about a strange sound I heard shortly after the bird stopped gobbling but did tell him I found gobbler tracks in my boot prints about 10-15 yards behind my setup. After a minute, he could tell I had not told the whole story and said well what is it, come on spit it out. Then I told him about the strange sound I heard but could also feel. It seemed like the strange sound was coming from behind me but didn't want to turn and see what was making that sound behind me. Just didn't want to spook or miss the turkey that I thought was about to walk out in front of me at at 25 yards. He just lowered his head, and while he slightly shock it back and forth let out light chuckle. I just stood there trying to figure out what was so funny to him. Then after his amusement seemed to be satisficed. He said, boy you called that bird in. The noise you heard was that gobbler spitting and drumming right behind you. Well, lesson learned, know you know what spitting and drumming sounds like.
Have only heard spitting and drumming about 2-3 other times hunting turkeys. Maybe if I'm lucky I will get to hear it again this spring.