Copy data by double clicking to paste to empty cell

[BJR6666]

Hi im looking for a way to copy cell data to empty cells by double clicking the cell with the data to copy and then double clicking the empty cell to paste but it would need to be so that its a double click to copy then double click to paste then to copy again then to paste again and so on, any help would be great on this as im just a novice.
Thanks in advance.