Its when you are getting head in one of the many hot tubs on Carnival cruise lines and you don't let her up for air until your yogurt floats or is swallowed.
Hey guys, you see that Latino over there, we just went on a Carnival underwater excursion. It was great.
by blmaxim February 8, 2006
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The act of going somewhere without planning it.
Did you hear about John and Amanda? Their on there spontaneous weekend excursion! I think they went to California.
by birse18 July 9, 2009
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A euphemism for an accident or screw-up at a nuclear power plant.
Power-plant manager: "Yeah, we had a nuclear excursion last night..."

Power-plant worker: "He means, we barely avoided leaking millions of litres of highly irradiated water vapour into the atmosphere."
by o_alquimista January 3, 2022
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Excursion, in the U.K is a word used to represent a mode of transport or a car specifically.
"If we're going out tonight should we just whip the excursion?"
by OutsideLightAKAbigLeg April 18, 2018
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Excursion, a word used mostly in the U.K which represents a mode of transport, mostly a car.
"If we're going to go out later should we just whip the excursion instead of taking the train?"
by OutsideLightAKAbigLeg April 18, 2018
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A short trip taken by pot smokers while high, usually to purchase snacks or to acquire more marijuana.
"Hey man, do you want to go on a little stoner excursion?"
by blazin420copscantcatchme August 29, 2017
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