Green’s Dictionary of Slang

tommy tucker n.

[rhy. sl. + ref. to the nursery rhyme]

1. (also Tom Tucker) supper.

[UK]‘P.P.’ Rhy. Sl. 13: Supper – Tommy Tucker. Get me a ‘Joe Blake’ for Tom Tucker.’.
[UK]J. Franklyn Dict. of Rhy. Sl.
[UK]J. Jones Rhy. Cockney Sl.
[UK]P. Wright Cockney Dialect and Sl. 103: Tommy Tucker ‘supper.’.

2. a person [fucker n. (6)].

[UK]R. Puxley Cockney Rabbit.

3. (UK Und.) a gullible individual [sucker n.1 (3a)].

[UK]R. Puxley Cockney Rabbit.