What is the riddle which can be asked all day with a different correct answer each time.

What does this say?

XLR8

I have a big mouth and I am also quite loud! I am NOT a gossip but I do get involved with everyone's dirty business.

People are waiting in line to board a 100-seat aeroplane. Steve is the first person in the line. He gets on the plane but suddenly can't remember what his seat number is, so he picks a seat at random. After that, each person who gets on the plane sits in their assigned seat if it's available, otherwise, they will choose an open seat at random to sit in. The flight is full and you are last in line. What is the probability that you get to sit in your assigned seat?

What runs around the whole yard without moving?

A man escapes from jail using help from his girlfriend. The investigators suspect four girls of being the man's girlfriend.

Out of those four girls, one is his girlfriend who is lying. Two of the girls are completely innocent and are speaking the truth. One of the girls is the man's sister who is helping the girlfriend lie. Following are the statements from all four of them:

Ariana: "Myrna is his girlfriend."
Jane: "Angelina is lying."
Angelina: "Ariana is lying."
Myrna: "Jane is not his sister."

Can you find out who is the man's sister among them?

Why do we preferably have round manhole covers and not square ones?

What is both possible and impossible at the same time?

I am sure no one can have two things for dinner. what are they?

Which part of London exists in France as well ?