2003 July 6, J.J. Chambers, “Re: Becker/Chambers -- the plot thickens”, in rec.arts.drwho[1] (Usenet):
OMG, for a second I thought you were Cameron Mason! ISTG you just did an impeccable impression of the way he came across at one point when he was attacking me. (No offence intended to Cameron here, but he did sound that way.)
2010 September 12, Rachel, “Re: Rachel's Thread, Hang On Bob!”, in rec.music.dylan[2] (Usenet):
No, honestly, ISTG, I think I remembered on my own, I remember where I was standing in the bedroom thinking about it, and it hit me, I THINK, unless I was trying to remember there, and COULDN'T, and looked it up later.
“ISTG [I swear to God],” she said, standing naked on one foot, the other bent and crossed above her knee, her fingers tapping methodically in the air a few inches from her toes as she was presumably fixing a crease in her Suit in the RW [Real World].
2018 November 29, RHDraney, “Re: PhD students - academics or not?”, in alt.usage.english[3] (Usenet):
[>> […] and discovered that the space was now occupied by a hardware store supplying local formers and laborers....] ISTG that said "farmers" when I posted it....
