What can run but never walks, has a mouth but never talks, has a head but never weeps, and has a bed but never sleeps? River

What is full of holes but still holds water? Sponge
How could all of your cousins have an aunt who is not your aunt? Your mom is their aunt.
What in an automobile engine serves no purpose but without it the engine does not work? Noise
There was an airplane crash, every single person died, but two people survived. How is this possible? They are married.
That attorney is my brother, testified the accountant. But the attorney testified he didn't have a brother. Who is lying? Neither, the accountant was his sister.
A man and his son were in an automobile accident. The man died on the way to the hospital, but the boy was rushed into surgery. The emergency room surgeon said ""I can't operate, that's my son!"" How is this possible? The surgeon was his mother.
On my way to the fair, I met 7 jugglers and a bear, every juggler had 6 cats, every cat had 5 rats, every rat had 4 houses, every house had 3 mice, every mouse had 2 louses, every louse had a spouse. How many in all are going to the fair? Just me, the others were coming from the fair.