Green’s Dictionary of Slang

Waterbury n.

1. the heart [pun on ticker n.1 (1) + ticker n.1 (3)].

[Ind]Civil & Milit. Gaz. (Lahore) 10 Mar. 4/2: ‘Be still my Waterbury! Flutter not so!’.

2. (US) a nonsensical story, a lie.

[US]Sun (N.Y.) 14 Mar. 12/1: ‘Hello, Chuck, did ye know that Mickey McDermott was dead?’ ‘Break! Break!’ said Chuck. ‘Don’t try to gimme a bamboo like dat. Why, I saw Mickey last night [...] Hey, is dat a Waterbury you’re givin’ me?’.