Repetition

When you want to make fun of someone for saying something, and say, "What was that again?"
1. People who will repeat it
2. People who will not repeat it

Singing Aloud

1. People, who, when you ask them how a song goes, will sing it out loud right then and there
2. People, who, under the same circumstance, will flatly refuse

Water People

1. Hot water

2. Cold water