Bad Daddy's in Birkdale is a little down the road for us from work but when you have a burger hunger it is worth the trip. I usually get either a salad (which are excellent) or the tuna burger. Since the tuna is sushi grade you can order it as rare as you like and you will be happy. Often i will order the sweet potato fries as a side (with BBQ sauce) but this last lunch I got the tatter tots, which are awesome. They came out a little short so the kitchen sent me what amounted to another order for free which was appreciated.
Fixings on items can become expensive and I do not like that they charged me .75c for extra slaw on the tuna burger but overall the service is prompt, portions are generous, and prices are reasonable. I can without reservation recommend for a casual fun lunch.