PAW PRINTS= "Paws" are the "hands" of animals with fingers (for example a lion, a bird or a dog have paws, but not a cow). "Paw prints" are like footprints but made by a paw (the mark they leave on the ground). (see picture)

OUT OF THE HEN HOUSE= The hen house is a little house for keeping hens. There is an expression in English which says "Keep the fox out of the hen house", which means "Don't assign a job to someone who will then be in a position to exploit it for his own ends". So now we know that the "paw prints" they said before belong to that fox (and on the SongMeaning tab you can read who the fox is). The song says "You never get the paw prints out of the hen house now", which means that you let them exploit you before, but not anymore, so it's fine now.

ROUND UP= Gather. Seek out and bring together.

LET YOUR HAIR DOWN NOW= (expression) Relax, don't worry and enjoy life.

GO AHEAD= We use this phrase to encourage someone to do something (or to give permission to do it).

LET IT ALL OUT= (expression) Express yourself, say everything you need to say, don't leave anything inside, and so you can relax and forget about it more easily.

LET IT BLEED= This is not a standard phrase or idiom, it was made up by The Rolling Stones for the title of a song, and in that context it seemed to mean "even though you might want to hold back because something appears to be wrong, if it feels good, just do it". So it probably has a similar meaning here. But the rest of the song seems to suggest that what you did was actually the right thing, so this phrase would simply mean "No regrets, forget now about the past and go ahead".

DID YOU GET WHAT YOU WANT?= This and the next question have an obvious implicit answer: NO. That's why it's alright to forget about the past situation and move on.

BEHIND THE LINES= (expression) This expression comes from the battleground, "the line" is "the front", the area closest to the enemy, where the real fighting takes place. So if you are behind the lines, you are at the front, fighting.

'BOUT= (coll.) About.

THE BED YOU MADE= The bed is your resting place, so this phrase is probably referring to that, to the new situation you have created for you to rest now.

CRUTCH= A staff or support used by the physically injured or disabled as an aid in walking. This word is also used figuratively (like here) to mean "support".

CAUSE NOTHIN' EVER DOESN'T CHANGE= This sentence is grammatically wrong because it uses a double negative; it should be: "Because nothing ever changes". But as it is, it sounds much more emphatic than the correct sentence, and double negatives are kind of common in colloquial language.