An extremely simple and convenient acronym for the most commonly used phrase "I know right", ikr varies with punctuation ikr! and ikr?
Joe: I hate these pop-up ads
Bill: I hate your face
Joe: ikr!
A commonly used abbreviation from the song lyric in "Brain Damage" from Pink Floyd's album The Dark Side of the Moon that goes "I'll see you on the dark side of the moon". Another common variation is TDSOTM to stand for the album name.
And if your head explodes with dark forebodings too,
ISYOTDSOTM.
