iac - in any case, i am confused, if anyone cares
ianal - I am not a lawyer
iat - I am tired
ibiwisi - I'll believe it when I see it
ibrb - I'll be right back
icbw - I could be wrong
iccl - I couldn't care less
icw - I can't wait
icwum - I see what you mean
icymi - in case you missed it
idc - I don't care
idgad - I don't give a damn
idgaf - I don't give a fuck
idk - I don't know
idm - it doesn't matter
ihu - I hear you
iirc - if I remember correctly
ilu - I love you
ily - I love you
imho - in my honest opinion
imo - im my opinion
imoo - in my own opinion
inmp - it's not my problem
irl - in real life
iyd - in your dreams
iyo - in your opinion