Looking on the internet deeply has found these results:

I have lunch is the most popular phrase on the web.

I have my lunch 15,280 results on the web	I have lunch 18,310,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Mike, Mum, I'm in a terrible hurry. Can I have my lunch right away? We're going to Shaldon for a game of golf. The boys are picking me up at one o'clock, and�... Aug 31, 2008 ... "I have my lunch with my girlfriends every Friday" :cross: (This is not technically wrong, it's just not idiomatic). "I have lunch with my girlfriends�... Jun 25, 2010 ... Technically, it's valid for me to say �I have my lunch� for the entire morning. �I have my lunch in the fridge�, but �I am having my lunch at my�... Oct 23, 2013 ... ... on the countertop, so she called to ask if I had my lunch. (In other words, Did I have my lunch with me? Or did I inadvertently leave it at home?)�...	Every day at school I have lunch with my friends. I have lunch with Irene tomorrow. I have lunch in an hour. Sorry, I have lunch plans. I have lunch in an hour. Ted, look. I have lunch. Hurry, I have lunch plans. Appealing as that sounds, I have lunch plans with Vincent.

I have my lunch

15,280 results on the web

I have lunch

18,310,000 results on the web

More popular!

Mike, Mum, I'm in a terrible hurry. Can I have my lunch right away? We're going to Shaldon for a game of golf. The boys are picking me up at one o'clock, and�...
Aug 31, 2008 ... "I have my lunch with my girlfriends every Friday" :cross: (This is not technically wrong, it's just not idiomatic). "I have lunch with my girlfriends�...
Jun 25, 2010 ... Technically, it's valid for me to say �I have my lunch� for the entire morning. �I have my lunch in the fridge�, but �I am having my lunch at my�...
Oct 23, 2013 ... ... on the countertop, so she called to ask if I had my lunch. (In other words, Did I have my lunch with me? Or did I inadvertently leave it at home?)�...