1.   After walking for hours in the hot sun, his mind began playing tricks on him.

2.   Fate plays cruel tricks sometimes.

3.   He had always played tricks on her.

4.   He knew, too, that his head had been aching and that his mind was capable of playing tricks upon him.

5.   Her brain had to be playing tricks on her.

6.   It allowed me to detect instances when time played tricks on the memory of some of the respondents.

7.   It happened a long time ago, and my memory might be playing tricks on me.

8.   Jack felt edgy but convinced himself that his nerves were playing tricks on him.

9.   Or was it just the swirling mist playing tricks on his eyes?