Languages and Culture Common Phrases

So I am writing a story and I need some common phrases from several different languages. Please put what they mean also. And also net slang will help a lot.

I have so far...

Spanish
Uno- "1"
Dos- "2"
Tres- "3"
Amigo/amiga "boy/girl friend"
si- "yes"
pocco- "little"


English
Yo
to wolf something down- "to eat something quickly"
gotta- "to have to/to need to"
Example: "I gotta leave now."
to threaten to kill someone- "to be very mad with someone"
Whatever floats your boat -"whatever pleases you"
shaky/sketchy- "unsafe, unclear, not a good idea"
I'm outta here- "I am leaving now"


Japanese
Itadakimasu- "bon apetit"
hai- "yes"
baka- "idiot"
konichiwa- "hello"
Honorifics (to many to name)

Net slang
ttyl
lol
rotfl
lmao
omg
wtf
brb
flame
pwned
gl
gj



I need lots more of English, Mandarin Chinese, Hindustani, Spanish, Arabic, Japanese, and net slang.

For net slang please none that are just simple word changes like 4, R,Y and etc.

 

Italian
Managia la miseria - "Darned be misery" or "what horrible luck"
* you can also add "Gotsa" ("Darn") and a noun (I.E. "managia la miseria gotsa pigioli" - darned be misery, darned kids) (pigioli is actually translated peeps but is referring to kids in this saying)
Stronzo - "Idiot"

 

Thanks.

Anything ya hear in a different language to your native would also help and popular right now in your own.