Mine too, it was the best thing on the thursday menu. You could even swap the mash for chips should you so desire. I often did, got a handful of shredded mozzarella from the salad bar, and made shitty poutine

My friend always disgusted me with his though, he also went to the salad bar, but instead of gravy just poured sweet chilli sauce all over the chicken and mash, then mixed it in. It probably tasted okay but it looked horrendous. He poured that shit on everything really, from fish and chips to the pizzas, to hot dogs, to lasagna, to even a tuna Jacket potato. He must have got through one of those 1l squeezy bottles a week