Can a shoopfag shoop this pic so the man on the left is replaced by a massive penis?

I am shocking at photoshop so it will be greatly appreciated. Also if the penis could have a tattoo of the RAF Regiment 'mud guard' on it for extra internetz (approx. over 9000)

thnx, i will bump with an example of the RAF Reg. 'mud guard' incase unsure of what i mean.