Runescape The Meaning of :s?

[Jambe]

On habbox :s means :S but on runescape what does it mean?
take other fourms it is like a man with a wobbely lip. and some it is a man say tssss on runescape what do you think the general meaning is?

[Burns]

Its confused...

[Rauhl]

confused lol

[Baller]

confused yh

[Jambe]

Yea but i alwayz thought it ment like a guy with a deformed laugh.. lol so did other people on differnt fourms. The laugh is like..
SssssSss or Tsstsssss

[Arch]

K1X u smoke to much

[Jambe]

Lies ^^^ i dont even smoke much.. My freind does weed tho...

[Arch]

it was a joke

but now we see ur true colours

[Jambe]

My true coulors are white with black writing look even my sig has it

[Arch]

same with my avatar ^^ ?