to me, there is no true definition of weird. i also think there's no definition of normal, either. normal isnt a real word considering ppl.

normal: normal is what u 또는 a group of peps think is a regular act 또는 way of doing. people may say that " that girls not normal" just cuz that person seems strange 또는 "not like everybody else's style".

here is the definition of "normal" in the dictionary:
of a matrix : having the property of commutativity under multiplication 의해 the transpose of the matrix each of whose elements is a conjugate complex number with respect to the corresponding element of the given matrix