Randomly picked for the pat down - Tradução em português
Escolhido aleatoriamente para a revista da alfândega. Agora sou verdadeiro contratenor.
Pode ser pela policia, procurando armas ou drogas. Ou no aeroporto.
I would almost certainly say it's referring to an airport or customs agency, because regular police officers don't choose people to search randomly. But yeah, the context isn't complete, although I'm pretty sure it's referring to customs agents.