Across the street neighbors spying on us.

[Pepsidude]

Close the curtains

[Ad Bot]

[Awdax]

Put a posterboard in your front lawn, telling them to stop spying on you.

[JamestheLeet]

When they're looking at your house and you see them doing so, go up to your window with binoculars and make direct eye contact with them.
Then while they're looking at you, take a painfully obvious flash photograph directed towards their house.
see their reaction.

Yes, good idea.

Put a posterboard in your front lawn, telling them to stop spying on you.

This is good too.

[Jairo]

write them a strongly worded email to forget off

[masterockets]

Close the curtains but have like a flashlight that shows your shadows on it
then when you know they are spying, make it look like either you are loving someone or you're killing someone