I think you mean UP A TREE (not in one), which means you're stuck in a situation that you can't get out of easily - you've figuratively climbed up there, and now you're surrounded by figurative enemies and can't climb back down again.
to support
It means tired of, frustrated with, and starting to get angry.
It means that you can be easily be woken up by any small sound.
"Zippity split" is an idiomatic expression meaning "hurry up," "right away," or "very quickly."
ad lib is short for ad libitum which means 'as desired", implying that the selection or topic is up to the desire of the speaker
to open up a can of worms means to bring even more problems to be dealt with than there were before. The can of worms is a new set of issues.
The speaker is asking what you have been doing, with the expectation--or hope--that maybe you have been naughty. It is probably derivative of "having been up to no good," meaning doing something bad or not worthwhile.
it means you are not as fast as somebody else
The idiomatic expression for "advanced in years" is "getting on in age."
pick up - idiomatic meaning is to learn something without much effort. I picked up Spanish when I lived in Madrid.
Go look in the mirror and make some faces. See how your mouth screws up? To make a mouth is to make a face, usually an unhappy one.
Go look in the mirror and make some faces. See how your mouth screws up? To make a mouth is to make a face, usually an unhappy one.