bathroom sniping

When you're busy in the bathroom in the morning and leave for two seconds, only to find on your return that someone else has occupied the bathroom.

1. With 6 of us in the house and only 1 bathroom, we have multiple occurrences of bathroom sniping every morning.

2. "Dammit Jim! I'm sick of your bathroom sniping! I'm right in the middle of brushing my teeth."