Well, that was odd

A little after 10p, I went out to the front porch to call Moshi. I heard odd sounds... a rustling. I didn't know where it came from so I made sure not to turn my back to the front yard. I heard it again and thought it was coming from the school (across the street). I continued to call for Moshi while scanning for hooligans... kids up to no good.

I heard it again. Close. Then a guy went through the intersection on a bike, still hopping on as he crossed and rapidly rode away. He'd come from the side of my house (public street).

The thing is, I know him. It was Mitchell, the semi-homeless guy who comes around and picks grapefruits from my tree (and occasionally leaves an avocado or two in return).

I don't get it. We know each other fairly well. He didn't say hello. He didn't acknowledge me. He knows I don't care if he picks the grapefruit. In fact, it was just last week that I told him (again) that it's fine. The rustling sound was definitely him in the grapefruit tree (or coming out of it). There are a bunch of rotten grapefruit on the ground and I could see, as he rode off, that he had a bag of fruit.

Why did he ride away so quickly & quietly, leaving a strong essence of guilt in his path??

What am I missing?