MTFBWY
may the force be with you
MOTOS
member of the opposite sex
MTE
my thoughts exactly
NM
never mind
NTK
nice to know
NP
no problem
NRN
no reply necessary
N/A
not acceptable
OMG
oh my God
ONNA
on no not again
OUSU
oh, you shut up
OTOH
on the other hand
