three-hour tour 

When something takes much, much longer than you thought it would. A reference to Gilligans Island.

"That meeting was a total three-hour tour. It was only supposed to last 30 minutes!"

three-hour tour by almond May 29, 2007

three hour tour 

Something that takes longer than expected. The term is a reference to Gilligan's Island, in which the characters take off for a 3 hour tour but end up stranded on an island.

"How was your bike ride?"
"Sucked, it ended up being a three hour tour after John lost the map"

three hour tour by aqua_scummm April 18, 2008