Meaning of the word "the unexpected always happens" in English

What does "the unexpected always happens" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

the unexpected always happens

US /ði ˌʌn.ɪkˈspek.tɪd ˈɔːl.weɪz ˈhæp.ənz/
UK /ði ˌʌn.ɪkˈspek.tɪd ˈɔːl.weɪz ˈhæp.ənz/
"the unexpected always happens" picture

Idiom

used to say that things rarely go exactly as planned and surprises are common

Example:
We had everything ready for the outdoor wedding, but then it rained; the unexpected always happens.
I thought I would win the race easily, but I tripped; the unexpected always happens.