"Ptruth" is a statement which could, logically, be
true, but which the
one who makes the statement has no idea whether it is actually
true.
If I
said that your brain is exactly the same size as your fist, and your dick is the same size as the distance between your
thumb and forefinger stretched out, that would be the ptruth, because it could be
true, but i have no idea whether it is.