What is Drölf?
1.
an unknown number
only used in german language
by beer drinkers and weed smokers
Wie spät ist es? - Halb drölf
What time is it? - half to drölf
when you dont know what time it is
2.
A undefined large number. However I'd spell it with 'T', e.g. "Trölf".
"I had trölf beers last night"
means I had too many beers to remember.