A childhood belief about nasty food

I hate avacados for one simple reason my grandma puts slices of them in her salads and when i was little maybe 4, I ate one not knowing what it was and made a face. My uncle who was sitting next to me told me it was a slug and to be more careful when I ate salad... I have given avacados the benifit of tasting better but the majority of the time that slug reference still freaks me out. I am almost 30...