The dog ate my watch and folding fan.

Literal

Dog [subject-が] wristwatch [and-と] folding-fan [object-を] ate.

A bizarre but grammatically straightforward statement. 食う (くう) 'to eat' is the rough/casual/masculine verb for eating — 食べる is polite/neutral. Here 食った is the plain past. 扇子 (せんす) is the Japanese folding fan, distinct from うちわ (rigid flat fan). The image itself is delightfully absurd — a dog eating a watch and a fan.