double-sipping
The technique of drinking some irresistible beverage with a fellow human being at the same time.
Did you see Jerry double-sipping that drink with his girlfriend?
Double Sip
Very similar to a double take, a double sip occurs when one sips a beverage, but does not full acquire the taste, thus forcing said person to take a second sip to experience the flavor.
Example : When Stefan had his first beer, he did a double sip then spat it out.