Looking on the internet deeply has found these results:

do you know what they're for is the most popular phrase on the web.

do you know what their for 10 results on the web	do you know what they're for 1755 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	Do you know what they're for? They're to remind me what I owe God when I die. My father was killed in battle too, in Ireland, in the streets, fighting those who ... Do you know what they're for? They're to remind me what I owe God when I die. My father was killed in battle, too. In Ireland, in the streets, fighting those who ... Do you know what they're for? They're to remind me what I owe God when I die. My father was killed in battle, too. In Ireland, in the streets, fighting those who ... You've probably seen us giving away coins to ‪#‎TriviaCrack‬ users, but do you know what they're for? The Extra Time ‪#‎PowerUp‬ is just one of the many ...

do you know what their for

10 results on the web

do you know what they're for

1755 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

Do you know what they're for? They're to remind me what I owe God when I die. My father was killed in battle too, in Ireland, in the streets, fighting those who ...
Do you know what they're for? They're to remind me what I owe God when I die. My father was killed in battle, too. In Ireland, in the streets, fighting those who ...
Do you know what they're for? They're to remind me what I owe God when I die. My father was killed in battle, too. In Ireland, in the streets, fighting those who ...
You've probably seen us giving away coins to ‪#‎TriviaCrack‬ users, but do you know what they're for? The Extra Time ‪#‎PowerUp‬ is just one of the many ...