Synonym of when you mess with the bull, you get the horns

(idiomatic) A situation where either choice results in a negative outcome; dilemma.

One cannot expect success at the first attempt; practice makes perfect.

Inexpensive goods and services tend to be inferior to more expensive ones.

The tone and delivery of communication is at least as important as what is actually being said.

Expertise leads to career promotion.

An affirmation of affection or deep caring, especially to a family member. / An affirmation of romantic feeling to a lover or spouse. / A platonic expression of strong inclination or liking to a friend.

Person or entity whose name one does not want to mention but which is known to the person to whom one is speaking.

(idiomatic) What is annoying or bothering you?

really?; no kidding!; is that so? (sometimes used sarcastically in response to the obvious)