We can talk this friday.

Then the next friday after the last friday we will say next friday. Then the next friday after the friday we said we would do it the friday before we will say next next friday. Then before the after next next friday we will say what we did 2 fridays after the original friday we will say next next next friday.

Then after that friday we will say remember 4 fridays ago we said we would do it friday but then the next friday we said well shit we said last friday we would do it before the friday after the original friday then two fridays past we would have done it 1 Friday plus 2 fridays so that is actually last Friday if you think about it.