Can Turtles Have Attitudes?

I'm not sure if our two pet turtles are trying to make a break for it, trying to commit turtlecide or what. Well first let me start by saying that since Michael Jackson's passing, the kids have renamed the turtles. No longer are they Myrtle and Skippity but Michael and Shirley. Not sure where Shirley came from but we will roll with it- I mean it's not like they know their names anyway.
I mean we feed them, the kids take them out for some time each week and we talk to them a lot. I feel like we are great owners- we consider them part of the family. So I am not sure what is going on in their little, now-you-see-me, now-you-don't, heads of theirs.
About two weeks ago, Daddy heard a thud and jumped out of bed to see what it was. One of them (heck the adults don't know them apart) had apparently climbed out from the little platform they bask on. He or she, fell in between the bookcase the aquarium is on and the wall. The turtle is lucky Daddy heard him and came to his rescue- otherwise it would have been chillin' in its little shell for some time. When Daddy put it back in the aquarium the darn thing had an attitude! Can you believe that? After dropping it back in the water it went all Chris Brown and started hitting at the other turtle. I'm sorry I don't know if they are cousins, sister and brother, common law mates or what. But I guess it had to take its frustrations out on something- surely couldn't be one of us... we feed them. So it continued its little aggression- taking it's little webbed feet and knocking rocks around. This would have been a good time to see that little bubble overhead and see what it was really thinking.
Well Sunday when we came in from church- guess we'd been gone for about three hours- I walk pass the aquarium, stop then take two steps back to take a closer look.
"Uhhh... call me crazy but it looks like there is only one turtle in there," I pointed out to my family.
The tanks not huge and we don't have caves or things for them to hide in yet.
The kids ran over to see. Daddy confidently went directly to the back of the bookcase.
Daddy was now baffled.
We all quietly and carefully walked around the room- in between the dining area and great room. Daddy spotted it first. Sitting in a corner, inside it's shell.
He picked it up gently.
"What are you doing out here? What are you doing- say?" Daddy said.
"Is it okay?" I asked.
Soon as he dropped it back in the water, it went off again! Swimming really fast, back-and-forth. Swatting at rocks. My eyes were almost crossed watching it go that fast. ATTITUDE!
I know turtles like to get out of the water for a little while each day to bask in the light or heat but those two are up there plotting.