Green’s Dictionary of Slang

toaster n.¹

1. (US) a flamethrower.

2001

(con. 1964–8) J. Ellroy Cold Six Thousand 362: A goon aimed a toaster. Said goon strafed low. Said goon cooked body rows tight.

SE in slang uses

In phrases

toaster roasted (adj.) [var. on toasted adj. (3)]

(US campus) extremely drunk.

2014

Eble UNC-CH Campus Sl. Spring 2014.