one wanting an item not because of need, but just because lots of people have one

tit for tat; eye for an eye

an eye for an eye, a tooth for a tooth; one is being forced to commit evil acts because others are being evil to him / her

don't you worry [colloquial]

your kindness will be returned tenfold [written and colloquial]

you have your life, I have mine [written and colloquial]

one always can come up with a strategy to overcome another strategy

You and me go a different way

life or death

what do you take me for, someone who you can call out and then dismiss again at your convenience? [colloquial]

remain unchanged

give me full support on winding him / her up! [colloquial]

all mine [colloquial]

sharing of benefits or profits yield

I'll handle it

“as if I care”; “what do I care”; “so what” [colloquial]

“as if I care”; “what do I care”; “so what” [colloquial]

…cannot intervene / interfere / stop whatever I am doing in anyway; …simply can't do anything to me [colloquial]

it's not done by me; I didn't do it

to take me as some kind of wimp that does not need to be taken seriously just because I haven't lost my temper yet [colloquial]

Sorry but I will be frank; excuse my honest opinion

egoistic

I come from Teochew; the pride of Teochew (Chaozhou), a television drama series in Hong Kong

I am [colloquial]

we

our; ours [written]

ourselves [written]

(pronoun) we; us

"ours"; "our…"

pronoun; ourselves