The genie joke?

An english man and a french man were walking along a river wen they spotted a bottle comin to the side. the french man opened it and out popped a genie. " thank you, you have saved me from a 1000 years stuck in this bottle as u have saved me i shall grant you 1 wish each" said the genie. the frenchman said " i want a wall around france so big it hits heaven and so thick nothin will break it down" the genie granted his wish. the english man said to the genie " before i ask for my wish i want to ask you a few questions how high is this wall? " "to the heavens nothin could get over it!" replied the genie " and how thick is this wall?" " so thick nothin will break it down" said the genie "well fill it with water then!!" said the englishman!!!