I usually just blurt out into random humming. There was one incident where I'd just tried a new chocolate bar and said something along the lines of "oooh heaven just came in my mouth" which looking back at it is very innuendo - but at the time that was lost on me much to the amusement of the people around me. :yuck: (and I'm... leaving myself wide open here too)

When having heated "debates" with managers at work during out team meetings my brain also sees fit to just proclaim my spontaneous reaction - which has landed me in a spot of bother a couple of times.