1 dice, whoever is big is small.

(1) There are six numbers on the dice: 1, 2, 3, 4, 5, 6; There are two numbers with more than 4 points: 5 and 6; There are three numbers less than 4: 1, 2, 3. Opportunities are not equal, so it is unfair.

(2) Because there are three numbers greater than or equal to 4 and three numbers less than 4, the chances of winning the prize are the same.

Therefore, it can be expressed as: laugh first when the number of points is greater than or equal to 4, and be naughty first when the number of points is less than 4.