Following in the party-time footsteps of songs like “Red Solo Cup” and “Beer for My Horses,” Toby Keith has added another impaired ditty to his repertoire with today’s release of “Wacky Tobaccy.” Written with longtime collaborator Scotty Emerick, “Wacky Tobaccy” celebrates the marijuana-loving lifestyle with lyrics like “That old Wacky Tobaccy / When you feel…