If you sneeze once, a girl is thinking of you; twice, she is wishing for you; thrice, it is a sign of a cold.
Alabama.

If you sneeze once, a girl is thinking of you; twice, she is wishing for you; thrice, it is a sign of a cold.
Source: Current Superstitions (1896), entry 1433.
Fanny D. Bergen, editor.
Modern normalized navigation; the historical attribution above remains unchanged.