2001,Peter F. Murphy,Studs, Tools, and the Family Jewels: Metaphors Men Live By, Madison, Wis.:University of Wisconsin Press, ISBN 978-0-299-17130-8, page 44:
When a man "blows his wad," at least two different things could have occurred: he either spent or lost all his money in a wager (his wad), or he spent or ejaculated his sperm (his wad). Thorne goes on to suggest that since at least the 1950s "blow," in this context, is a euphemism for "ejaculate."
2001,Peter F. Murphy,Studs, Tools, and the Family Jewels: Metaphors Men Live By, Madison, Wis.:University of Wisconsin Press, ISBN 978-0-299-17130-8, page 44:
When a man "blows his wad," at least two different things could have occurred: he either spent or lost all his money in a wager (his wad), or he spent or ejaculated his sperm (his wad). Thorne goes on to suggest that since at least the 1950s "blow," in this context, is a euphemism for "ejaculate."
2009, J. M. Snyder, Mastering Stefan, published in Eight: Gay Erotic Stories, Glen Allen, Va.: JMS Books, 2010, 978-1-4515-8485-1:
There's a cock ring he keeps stretched around a hairbrush; he rolls it off and slides it down into place against the base of his shaft, to help him stay hard without blowing his wad.