Well -
Most of my time is in taildraggers, and I've never had even an incipient groundloop, but I understand the dynamics pretty well (as described in the
Wikipedia page on the subject).
And I haven't flown a C-150 in a decade or two, but I can think of only one way to set up the necessary dynamic instability to make it ground loop: Namely, "wheelbarrowing" i.e. touch down much faster that normal - 60-70 kt maybe. This means the nosewheel touches first, and if there's any drift at all, the CG goes one direction while the nosewheel goes the other. THAT is the necessary condition for a groundloop. And I've known a pilot or two who has been banned from my home field for such poor technique.
Give me a good full-stall landing any day!