Orin's Phoenix morning (p. 47)
Not real bright—she thought the figure he'd trace without thinking on her bare flank after sex was the numeral 8, to give you an idea.
Context
Orin's unconscious post-coital doodle on Subject after Subject: she reads it as an 8, but laid on its side it's the infinity sign — a closed double loop drawn compulsively, the serial-seduction cycle signing itself.