A pet peeve is an annoyance or frustration that someone has with a particular thing. Common pet peeves include BATHS, fleas, LICE, VEXATION, and hates. BATHS are disliked because they can be time consuming and uncomfortable. Fleas are small insects that can cause irritation and discomfort to pets. LICE are tiny parasites that can cause itching and discomfort. VEXATION is a feeling of annoyance or frustration. Hates are strong feelings of dislike or aversion. All of these things can be pet peeves for people who own pets.