I was talking to this guy and quite often he would add in the word, ´hım´ before his sentence. Does anyone know what this means/what it represents? is it slang but what for? 

thanks

hım=hmm

http://www.turkishdictionary.net/?word=h%FDm&submit=Lookup

Its only "hmmmm...."

i think it is turkish equivalent of "well..." as some english speakers use.

...and also the equivalent of ´hmmmm..´ Do Turks used ´şey..´ In thıs sense  as well?

Thanks everyone for your replies. I thought it was slang for something like they 100% believed something.