To be angry with Greggs girl?

[RebelRogue]

Went i to my local Greggs and ordered two pepperoni pizzas and a star cookie for dd. Guy at checkout tells me that i can have a drink for only 50p. I picked a coke and put it on the counter. Girl behind me pipes up "you really should have a ribena with two pizzas and a cookie,not coke". I replied with " I'm a grownup and i'll pick my own bloody drink,thank you!".
As to not drip feed,yes i am fat(in case that was her issue) ,no i don't like ribena.

She probably thought Ribena went better with the pizzas and coke, taste wise.

Wind your neck in! You're seeing a slight where there wasn't one and she was trying to be helpful/friendly.

Did this actually happen?

She's probably spent too long on the FB Meal Deal group and now thinks critiquing meal deals in public is acceptable.