Is off one's trolley British informal slang
If you're off your trolley, your ideas or behaviour are crazy or insane.
There's no doubt that the man was off his trolley when he had jumped into the lake in the winter
You must be off your trolley if you think I have a lot of money to lend you.
Stupid or crazy
Suddenly become crazy or very angry or lose control
Totally insane; overflowing with emotion, especially rage or enthusiasm
A crazy, strange, or eccentric person
The terms off one’s rocker and off one’s trolley came into use in the 1890s and are both most probably related to the operation of a trolley. Trolleys operate by running along overhead electric cables that attach to a metal arm on top of the cab. In the early days of mass transportation, these arms would often lurch off the electric cable. Once disconnected from the electric cable, a trolley has no source of power. Many believe that off one’s rocker is somehow related to when your nerve has problems, they will misbehave