There is described a drinking straw for a package being filled with a pourable food product. The drinking straw being configured to be at least partially inserted into a package main body of the package. The drinking straw comprises a tubular main body including a coupling portion extending along a central axis; and a sleeve fitted on and surrounding at least the coupling portion of the tubular main body. The sleeve comprises an abutment portion configured to abut onto an inner surface of the package main body after a partial insertion of the drinking straw into the package main body and during a movement of the drinking straw out of the package main body for impeding and/or hindering and/or blocking a removal and a separation of the drinking straw out of and from the package main body. The abutment portion has a frustoconical shape.