“Buckle Up” (buttercup)?

Buckle up was originally used as a phrasal verb to remind those in a vehicle to fasten their seatbelts.

Over time, it also was used as a warning or suggestion to prepare for something literally or metaphorically bumpy. This could be a rocky road or any intense action

Buckle up Buttercup is a sarcastic expression, denoting that one should get ready for some upcoming unpleasant or extreme action.

• online dictionaries.

Biden wants to stop the sale of F-35s to Saudi Arabia so Iran can attack Israel to divert attention from China ( allegedly) attacking Taiwan…or the US.

Biden needs to go sooner rather than later.

It’s time to buckle up.