Portland Stage Company will give audiences a behind-the-scenes peek at an elf gone bad in David Sedaris’ “The Santaland Diaries.” Dustin Tucker portrays David … Crumpet, one of Santa’s little helpers during the holiday rush at Macy’s, as he copes with thousands of shoppers (and their kiddies) with wacked out, wicked wit. The show, for mature audiences only, opens Friday, Nov. 23, and runs through Dec. 16 at 25A Forest Ave., Portland. For tickets or more information, call 774-0465 or visit www.portlandstage.org.