Why would you want to intentionally do that?

I have unintentionally done that and it has been picked up by the Customs officer, fortunately good naturedly, as I had written where I had been - including Africa, then inadvertently ticked I had not been in Africa on another section. The officer question my mistake and corrected it.

On our declaration forms there is a bold section detailing possible penalties for false declaration so I am at a loss why anyone would want to intentionally do so other than for nefarious purposes...