A friend of mine from long ago was, or had been, a fingernail biter, and when he started playing fingerstyle, he used artificial fingernails. For economy, he used beauty products made of (possibly) acrylic, which is flammable, or inflammable,(isn't english wonderful?)and whilst lighting up onstage (how cool) managed to set one alight. The memory of him trying to remove it stays with me to this day.
Rivetting. Ruined his beer, too.
The end-of-the-string style came after the between-the-string style, as I remember, when we started smoking filter-tips. For our health's sake.