"I wanna taste your cum" That is so erotic to hear, I don't last much longer after that's said. I know more often it's not about tasting anything, rather than a measure of ending the act quickly by means of a technique well known to both parties, technique involving eroticism at a level easily achievable to heighten ejaculation function speedily. If you're known to lose your load by means of wordage used, and the act must end quickly, then use the word/s known to make you cum there and then.