Used primarily to describe the sounds musical instruments make. For instance, the famous adult film guitar sound would be onomatopoeiated with the words "bow chicka wow wow" because that is a rudimentary description of the sound made by the guitar.

Animal sounds, suck as meow, bow-wow, woof, moo, and so on are also examples of onomatopoeating words.

Wife: “Have you put the sheets out to dry and put the towels on?”
Husband: “Yes. You know I am a grown adult also used to live alone so you do not need to micro marrige me”