1 There's no such thing as a free lunch. 

2 The students have lunch at school.

3 Two bottles of wine will suffice for lunch.

4 Lunch is his main meal of the day.

5 After lunch he reposed on the couch.

6 A heavy lunch makes me sluggish in the afternoon.

7 Grandpa usually has/takes a nap after lunch.

8 We serve hot and cold lunches.

9 We've got sixteen coming for lunch.

10 She served us a delicious lunch.

11 Have you got your lunch box?

12 She ate a small lunch before the meeting.

13 We took an hour lunch break.

14 We used to ski before noon then take a long lunch.

15 Use your lunch hour to have a nap in your chair.

16 It was a Sunday,[] so she could lie in till almost lunch time.

17 The territory was too expensive for any one, so the two couples parceled out a picnic lunch.

18 He dashed off to lunch at the Hard Rock Cafe.

19 It was always roast lamb and canned peas for Sunday lunch.

20 She promenaded the children along the sea front after lunch.

21 The luncher is Ken Langone, billionaire co-founder of Home Depot. The guy she "nailed" is Ben Bernanke, the new chairman of the Federal Reserve.