Fish and Chips about once a month, on average over the year (more in summer less in winter as we have a round trip of 30miles to get gluten free).
supermarket take away curry bag about once a month
chinese - about 3 or 4 times a year just me and DH
we do eat other 'junk' at home though eg frozen breaded fish, or sausages, with oven chips on a lazy/busy day once a week. pizza once a fortnight I buy the bases but then its topped with tomato puree and loads of veg, and eaten with salad and coleslaw.
never ever have TA pizza (last time was 16 yr ago when we had just moved home and had no cooker!), never KFC, 1 of DC occasionally (2x year) has a McD but the other 2 never do - a treat for them is hot choc and cake with friends in costas.
I think that TA once a week is a nice treat if you can afford it, but it all depends what you are eating the rest of the time too. I know friends who would say their DC never eat take aways, but they live on nuggets, sausages, waffles, oven chips and frozen pizza, or plain boiled pasta with grated cheese. barely any veg in sight..
Same for eating out - if we eat out (maybe 8 times a year) it's usually a sunday roast with lots of veg and decent meat. Hardly in the same league as McDs or KFC.