Fill er up
The term used to tell someone that they should deposit some more petrol in the tank of thier car if you are drugged to the eyballs
Person 1 says: Hey your tank is empty, maybe you should fill er up
Person 2 hears: <mumble> fill er up
Person 2 hears: <mumble> fill er up
Fill-er-up
When a man puts his penis into a girls anus and urinates.
She was running a little low, so I had to fill-er-up.
Fill 'er Up
When having analingus with a lover... Urinate inside her...
Yeah so I totally pulled the Fill 'er Up on my lady friend.