In most drum 'n' bass tracks - there is what is known as a 'drop'. A double drop is where the DJ manages to get both records (or maybe more) to reach that drop at exactly the same time - thus creating an intense mix.
"Check that out, he just double dropped both those tunes and the whole crowd went nuts!"
ayon kay Tom Ragan ika-05 ng Pebrero, 2006
A scam where a waiter/waitress used the same check for two tables, one which was never entered into the system. They then pocket the cash from the table never really billed.
When the double dropped table asked why their drinks were incorrect, the waitress said she entered it wrong but they're the same price and that satisfied the customer keeping the scam secret.
ayon kay grandzu ika-06 ng Hulyo, 2010