Related Clues:
- Deviating from what is usual
- Railway engine - mad!
- Extravagant - fantastic
- Not abiding by what is proper
- Mad - train
- Unusual - shocking
- Barmy (Spanish) — engine (abbr)
- Bats or bonkers
- Really weird
- Off one's rocker, and a hint to what the four longest puzzle answers have in common
- Crazy to Carlos
- Common knowledge regarding what's unusual and startling in France
- Startlingly unusual
- Way weird
- In ... parentis, in place of parents