A mountain in North Vancouer, BC that reaches 1,250 metres at it's peak. It has 25 skiing/boarding runs that are usually open in winter. The top is accesible by a hiking up the Grouse Grind trail and/or riding the "Super Skyride" which takes you up to the top. Grouse also has the North Shore's biggest snowmaking fleet. Approximately 1.1 million people vist Grouse annually as it is one of Vancouver's biggest tourist destinations in the summer and winter. The view has been rated the best in Canada various times. Grouse also has an amazing restaraunt and a theatre at the top. There is also a skating pond in the winter.
When a group of friends find a dead bird (famously a grouse) the day after the night before whilst still relatively intoxicated and decide t'would be a good idea to use it to cause mischief and/or shennanigans. This could involve a good slap or as it should be known a grousin' to an unsuspecting pedestrians face! Alternatively you could dump it in a public urinal or in your flatmates frying pan. It helps if you drive a soft top car with the roof down playing the greatest hits of Justin Bieber and Baby Alice.
Billy Joel: "Shit dude, me and the guys got totally wasted last night and this morning we went for a bit of grousin' like you do."
Steve: "Grousin', what's that?"
Billy Joel: "You know, when you find a dead bird by the side of the road and use it to cause all sorts of crazy mischief!"
Steve: "Dude wtf is wrong with you? I hope you get caught"
Billy Joel: "I really don't know man, I hope we do too otherwise we'll never learn!"
Groosy is the nickname for a wee man who loves kids, who keeps his sack full for special occasions and likes playing fifa for a chance to shag other guys burds