The court heard Tuckwood said he had a knife in his pants, and officers searched him.
"A 15cm blade was found secreted between his buttocks," Senior Constable Burrell said.
When asked why he was carrying the knife Tuckwood said only "have you seen Caboolture?".
Tuckwood pleaded guilty in Caloundra Magistrates Court on Wednesday to possessing a knife in public and obstructing police.
Deni Jai Carr is charged with obstructing police, assault occasioning bodily harm and assaulting a police officer in a public place while adversely affected.
Sen-Const Burrell said the fact that the knife was hidden where it was meant Tuckwood knew he shouldn't have had it, and that it could have posed a threat to police.