When receiving oral sex it is a common courtesy to let the woman know that you are close to orgasm, so she doesn't blind herself or choke to death on your seed...
"Are you still seeing Sloop??"
"I don't think so; I failed to give her the ten second tap last weekend and she hasn't returned my calls since then"
"Bummer"
"I don't think so; I failed to give her the ten second tap last weekend and she hasn't returned my calls since then"
"Bummer"
by Smiling Irish Mike April 4, 2008