2002 March 5, "Oreon" (username), "Re: doesn't work", in alt.support.impotence, Usenet:
I've used a cock pump for couple of years to improve my nocturnal erections (NEs).
2005, Midori, Wild Side Sex: The Book of Kink: Educational, Sensual, And Entertaining Essays, Daedalus Publishing, →ISBN, page 189:
It pulls the entire nipple up, into the cup, engorging and swelling it temporarily. It works just like a miniature cock pump.
2005, Joey Gaynor, “Performing is the only thing I’ve ever wanted to do”, in Joel Eisenberg (editor), Aunt Bessie's How to Survive a Day Job While Pursuing the Creative Life, Topos Books, →ISBN, page 273:
A few years back, after her death, I worked in an adult book store. […] There’s something about a guy coming in with a cock pump that didn't work and asking me to fix it … […]
