Green’s Dictionary of Slang

pintle-de-pantledy adj.

frightened, scared.

c.1698		B.E. Dict. Canting Crew n.p.: Pit-a-pat, or Pintle de Pantledy, sadly Scared, grievously put to it.
1725		New Canting Dict. [as cit. c.1698].
1785, 1788, 1796		Grose Classical Dict. of the Vulgar Tongue n.p.: Pit-a-pat, the palpitation of the heart: as, my heart went pit-a-pat; pintledy-pantledy; the same.
1811		Lex. Balatronicum [as cit. 1785].
1823		Egan Grose’s Classical Dict. of the Vulgar Tongue.