It means a large issue or important question, that is recognized by the people in a conversation, but has not been explicitly discussed.
Silverbacks weigh approximately 150 to 200 kg (310 to 440 lb).
The biggest gorilla weighed around 800 pounds and stood 6.8 ft tall.
Anything he wants
A gorilla named Gargantua, which was raised in captivity, was the largest known gorilla in the world, weighing, according to sources (see related link below) around 550 to 600 lbs. Lowland gorillas in the wild only grow to around 400 to 500 lbs, by comparison.
There are three subspecies of gorillas: the western lowland gorilla, the eastern lowland gorilla, and the mountain gorilla. All three subspecies are endangered, two are considered critically endangered. There are approximately 50,000 western lowland living in the wild in Central West Africa. There are only about 2,500 eastern lowland gorillas living in the wild in the Congolese rainforest. The mountain gorilla is on the verge of extinction with only 500 living in the wild (and none in captivity).
I can't find any cockney slang called "gorilla" but a monkey is 500 pounds.
No, 500 pounds would be a very heavy gorilla in the wild.
The 2014 FIAT 500 has 35.6 in. of rear head room.
The 2012 FIAT 500 has 47.9 in. of front hip room.
The 2014 FIAT 500 has 38.9 in. of front head room.
The 2012 FIAT 500 has 42.6 in. of rear hip room.
The 2012 FIAT 500 has 46.4 in. of rear shoulder room.
The 2013 FIAT 500 has 46.4 in. of rear shoulder room.
The 2014 FIAT 500 has 40.7 in. of front leg room.
The 2013 FIAT 500 has 49.4 in. of front shoulder room.
The 2012 FIAT 500 has 49.4 in. of front shoulder room.
The 2013 FIAT 500 has 42.6 in. of rear hip room.