A caution that the activity being described or demonstrated is not safe for ordinary members of the public to attempt.

(humorous, informal) An expression of disappointment, especially towards something of or pertaining to The Flintstones franchise.

(Canada, US, informal) Expressing great wonder or surprise.

Advice to writers: convey an impression by the way that events are described in the narrative, and not by explicitly stating facts.

Synonym of don't that beat all

Used to indicate that the speaker is uncertain of the accuracy of their statement and does not wish to have the statement attributed to them.

(informal) Addressed to someone whose departure is permanent or for a long time

(finance) Do not bet or trade against the trend in the financial markets.

(informal) I don't know; I have no idea.

(generally in an angry tone) bear in mind, remember