I don't mind a casual glance in as they go past the window to the door but to stop, shade their eyes for a better look and peer right in the window pisses me off no end. And the door is right next to the window so it's not as if they have to hike round the house to get to the door.
Ooh this pisses me right off!! A delivery man did it yesterday before he knocked and asked me to take in SEVEN big boxes for my neighbour.
The time before it was JW. They knocked and knocked then actually put their faces up against my living room window to see if we were in. How bloody rude and intrusive. I'm (not very) ashamed to say I got up, stuck a finger at them and closed the blinds!!
Oh dear lord, we've recently bought our first house (thr front door is in the middle of the house) and delivery people and family both keep doing this! I've decided to invest in some massive plant pots to block their way but I can't get over how intrusive and ruse this is!
Get a reflective film for your window (or just the bottom half). The sort where you can see out of the window, but they’ll see their reflection when trying to look in. It’ll give them a right scare. Then they’ll stop.
The little shit from next door does this if I'm too preoccupied to answer to send his sodding ball back (i.e. tricky bit of cooking, naked from shower, napping because of migraine etc).
It goes - ring doorbell several times - bang on door - call 'hello' - peer through window. Little git. You'll get your ball back when I'm sodding ready. It's not a cup final.
(Unfortunately I'm a bit spineless about this because his parents are absolutely fab, I can hear them telling him off when they catch him at it, and I'm hoping to have them around to do some building work for us)