A name for an alcoholic beverage that was originated in LLoret de Mar, Spain. It basically means: A longdrink glass filled with 50% whiskey and 50% coke/energy drink. Many Dutch teenagers are familiar with this alcoholic culinarity.
The inventor is Dennis Neven, explaining the name "Dennisje".
After a minimum consumption of three glasses one is supposed to be drunk.
Dude is was so drunk last night, i drank at least six dennisjes.
Can you fill me up on the whiskey, i'm gonna take a dennisje.