Wiktionary
fuck-off
a. (context vulgar slang English) dissuasively or intimidatingly large; massive. (Often used after "big" making it redundant)
Usage examples of "fuck-off".
Everything from fundamental femtoscopic particles like elyctrons, up to big fuck-off volcanos.
Everything from fundamental femtoscopic parÂticles like elyctrons, up to big fuck-off volcanos.