Green’s Dictionary of Slang

bummed adj.

[bum v.1 (1)]

arrested.

[UK]Bailey Universal Etym. Eng. Dict. n.p.: bummed, arrested.
[UK]Grose Classical Dict. of the Vulgar Tongue n.p.: bummed, arrested.
[UK]G. Kent Modern Flash Dict. 8: Bum’d – arrested.
[UK]Flash Dict. in Sinks of London Laid Open.