Básicamente debes abrir el chat, colocar alguno y enviarlo! Lo escucharas tanto vos como los que estén a tu alrededor. Esto sirve en aquellos servidores que soporten "Chatsounds"

Los mas comunes:
ok
oops
run
freeman
hax
help
figures
cheese
combine

Pero... Hay algunos que no son tan comunes pero existen, y son los siguientes:
ammo
behind you
better reload
♥♥♥♥♥♥♥♥ = bull-sh!t
coming
cops
cp
cps
cut it
dont tell me
dejavu
ehhh (works on some servers)
excuse me
fantastic
finally
follow
focus
get down
get in
get out
good god
gosh
got one
gotta reload
gtfo
haxx
here they come
hello, hey, hi
heads up
he's dead
how about that
i know
ill stay here
im busy
im with you
isnt good
incoming
it cant be
it is ok
kay
lead on
lets go
never can tell
nice
not good
not sure
now what
oh no
omg
over here
over there
pardon me
please no
same here
shut up
spread the word
stop it
stop looking at me
sorry
take cover
take this medkit
task at hand
talking to me
thats you
this cant be
this is bad
too much info
uh oh
wait
wait for me
wait for us
wanna bet
watch out
we're done for
what now
whatever you say
whats the use
whats the point
whoops
why go on
why telling me
yeah/yes
you and me both
you never know
you sure

¡Bien hecho! Ahora sos un jugador que va a terminar gageado perma de tu servidor favorito por ser tan spamero, que lo disfrutes y de nada.