My husband accused me of being a pervert and really hurt my feelings?

I don't know what to say to such harsh words. My husband was having a shower today after a long day of building a fence in our yard. He knew I was in the washroom to go pee which he said was fine. After I went pee I peeked and watched him in the shower for a bit (he did not know I was watching) and when he bent over to wash his feet I giggled and he turned around and called me the "world's biggest pervert".