The Collaborative International Dictionary of English v.0.48:
Perk \Perk\, v. i. 1. To exalt one's self; to bear one's self loftily. "To perk over them." --Barrow. [1913 Webster] 2. To act in a jaunty or presumptuous manner. [PJC] To perk it, to carry one's self proudly or saucily. --Pope. [1913 Webster]