Post parallel parking

Before you get in your parallel-parked car, make a mental note of how much space lies between your car and the cars parked behind/in front of it. You'll feel more confident backing out/pulling forward.

Rent checks

Don't pay your rent in cash. Your landlord could pocket the money and lie that you never paid it.

Developmental Sarcasm

Sarcasm is lost on children still learning language and will come off as confusing and possibly mean-spirited instead.