I might be bipolar

So, it seems I have some "issues". Just because sometimes I am the sweetest most loving dog you will ever meet and then sometimes I am mean and cranky and growl doesn't mean I'm crazy.
Here are some of my "issues" according to Mama and Daddy:
First thing in the morning after I've ran outside a couple times I am usually pretty darn cranky. I suck them in by rolling over and acting like I want my belly rubbed but then I growl and snarl and maybe snap a little. I don't see what the problem is. I wake up, run around and then its time for my early morning sleep time. It's kind of like this:

Other times I think I'm going to get beaten and have to hide and am really pathetic and sad. I'm not sure why I do this as neither Mama or Daddy has ever beat me but you never know. This morning in the kitchen Mama bent down to pet me and I ran under the dining room table. However, when she came home at lunch I was SOOOOO excited to see her I couldn't leave her alone and gave her lots of love and kisses.
Another thing I've been doing that really seems to bug them is when its time to go out at night I just sort of stand/sit around. Not sure why, just something about the night, it has some kind of odd effect on me. I used to just go out with my most wonderful girlfriend Nola, follow her around, do my business and come in. Then who knows what happened and I sometimes just sit out there and contemplate life and stuff. If Mama or Daddy come out to get me I get a little nervous, roll over and then I might just pee on them. They don't seem to like that.
What can I say, I had a hard life on the streets, it may have messed up my brain a little.