Because some people cannot quite figure it out themselves.
1 - Do not breath under water.
2 - We have it, if it's in stock.
3 - Road closed due to flooding.
4 - Water on road during rain
5 - At risk of throat cancer if you have a throat or mouth
6 - Do not sit on fence
7 - Don't let your child drive
8 - Falling can hurt
9 - Water levels are high
10 - Press ^ for Up
11 - Battery has been removed
12 - This way to Path
13 - Balcony is not on ground floor
14 - Hills block view
15 - Bins are not exits
16 - Library is closed until it opens
17 - No parking in lake
18 - This sign is not in use
19 - Do not walk through closed doors
20 - Remove lid before drinking