how to start a presentation with humor

6:03

3:57

11:44

5:20

10:55

23:22

2:10

10:54

3:53

12:36

10:48

14:15

9:38

2:56

7:19

4:10

3:41

5:29

13:25

5:08

5:56

5:56

3:54

9:50

1:29

2:21

کوتاه

4:11

2:23

8:19

3:44

7:19

28:47

کوتاه

5:41

3:41

16:46

11:30

7:34

2:45