Potshot (noun)

An attempt to criticize or attack someone or something, especially in a casual or easy way.

Origin:

Early 19th century: from pot (i.e. head) + shot (i.e. shot taken at it).

Examples:

1. The journalist took a potshot at the politician for his lack of experience.
2. The comedian took a potshot at the celebrity for their recent scandal.
3. He took a potshot at his opponent during the debate.
4. The political campaign was filled with potshots from both sides.
5. The potshot was seen as a low blow and not a serious argument.