Perhaps my first musings of infinity came, as a child, when confronted with the instructions on a bottle of shampoo. Lather, rinse, repeat. How many times was i expected to repeat these? Was i destined to be trapped in a hygienic Moebius loop? Mom set me straight, as usual.
@MisterFoxGuy I remember reading somewhere that the "repeat" part was just a marketing gimmick, and I felt bad for falling for it. At least my hair was clean.