What makes the inside of your ear tickle?
The earwax in the canal could cause the tickling in the ear. When the wax dries off, it loosens and tends to fall of and thereby causing the tickling. The hair in the ear can also cause the tickle.
Cleaning your ears often will help.
Me and my sneaky little feather...
Air goes in and it blows your ear hairs
Maybe your brains are leaking out.
Earwax, some kind of insects like ants, sometimes fungal infection because after bath some water is left inside and if not cleaned it causes infection.