What is the difference between "sittin' up in my room" and "sittin' in my room" Thank you! :)

What does "you all in my grill" mean? Thanks for your response. :)

Can you correct this text please! Hi, How is it going? this has been a long time no write on italki, well the reason from what I'm writing is for seeing how my english has improving, so I hope you can help to correct this text. Lately I've not been really busy, cause in this time I'm looking for a job, so I've keeping doing basically two things: to take classes for learning to drive, this hasn't been difficult at all, in first moment I felt so excited and complicated at the same time cause I thought this would take too many time in learning to know the rules, mecanic and use of the car, like this one is a Science, but I've realiced anyone can learn to drive a car (except the blinds obviously). Besides, I've keeping my mind occupied on going to gym, cause my physiatric doctor recommended it to me due to I suffer of constant pain in the back, from what I've got to work more my muscles from this part. Actually, I got a life really sedentary but fortunately I am thin and I'm really good in eating. Well I hope you didn't get bored reading this text cause I had more ideas to put here. I'd really thank you if you correct this text to measure my english level. Have a great day, see you around, bye!

Help in next sentences please...I'd really thank you so much! In the context of "Otherside" song from Red Hot Chilli Peppers: 1)Take it on...(give synonymes to me for this phrasal verb please) 2)Separate my side...(in this case, separate is a verb or adjective?... and side is synnonime of "human face" or "face from sth unanimated"?) 3)Slitting my throad it's all I ever...(I don't know if he really means if he "never" or "always" wanted to slit her throad cause in spanish "ever" word can mean both of them 2. I'm translating this song into spanish, cause of this I need to know what do these words mean in my native language...

What does "take it on the otherside" means? Thanks in advance Take it on the otherside take it on take it on Otherside from Red hot chilli peppers band

Translation of "spread myself around" into spanish In figurative sense, what does it mean?

What does "pull up to my bumper" means? thanks

what does mean "I've been through changes"? Thanks in advance In context you don't keep on beeing the same person former

Meaning of "Bridges are burning" (figurative) In the context when someone learns to think about different and new way