Hint 1
If it rains, bring UMBRELLAS to prevent wet UNDERWEAR. It's so important to have a matching pair!
Hint 2
Working out what each picture memes only takes you halfway there. Perhaps a prayer can help if this puzzle is too much of a scare?
Hint 3
The first two pictures clue for a line from Bon Jovi’s “Livin’ on a Prayer”. All other image pairs clue for a possible rhyming second line. Take the "halfway" letters from these images to extract your answer. Make sure you are using plural words when appropriate!