Shitty Rectal Fingering
Something hugely unpleasant. Exactly as unpleasant as it sounds.
A psychopath who collects knives - just ordinary shitty big sharp knives - beats people up, kickes them in the head after they've fallen on the ground, then chases after them with four of his knives - two in each hand, throws Ventolin inhailers at people, throws wood-working planes at people, stabs them with blunt rusty old screw drivers, threatens them, and then makes up stories about how it was actually his victim who did all of that to him.
I really got an SRF, that is a Shitty Rectal Fingering last night. My head is bleeding from the metal object that some guy threw at me.
Don't SRF me!