Greedy
borrower
thrifty
call the police
The phrase "put your money where your mouth is" is often used to call someone's bluff. It basically means that someone talks a big talk but are they willing to make a bet on it.
Executive Director of Publishers Clearing House.
A Gold-Digger
One common term is a 'gold digger'.
Someone who loves babies is called a pedophile.
Logophile
Phylomath
A Lush.
A boylover
Patriot.
A nerd
sellotapist
Aquaphile
biologist