affected pronunciation of STOP v., in the phrase Stap my vitals, used as an exclamation of surprise, anger, etc., or as an asseveration.
Prob. the first quot. is the source of the phrase. Lord Foppington, the speaker, pronounces a for o throughout. Cf. GAD, EGAD, and the pronunciations Laard, plaat (for Lord, plot) attributed to Titus Oates.
1696. Vanbrugh, Relapse, I. iii. Well, tis Ten Thousand Pawnd well givenstap my Vitals.
171620. Lett. Mists Jrnl. (1722), I. 50. Thou art one of the most comical Dogs, stap my Vitals! that ever set Pen to Paper.
1730. Fielding, Authors Farce, III. 34. My Life went out in a HissStap my Breath. Ibid., 46. And so all my Puns, and Quibbles, and Conundrums are quite forgotten, stap my Vitals.
1839. Thackeray, Catherine, i. Stap my vitals, my dear, but there was a lady who had a hoop as big as a tent.
1901. Graphic, Christmas No. 24/2. Tis a trick of theirs. Stap me, we shall have em yet.