Top Definition
A rule that implies a guy should receive sex from a girl that he is seeing/dating within a 100 usd dollars being spent on her. If he does not receive sex with the first $100 spent, the girl is not into him and/or is using him.
Ex1. Guy A: So how did it go with that girl Kelly last night?

Guy B: It was fun. I bought her 100 dollars worth of clothes when we went to the mall and she said she would call me soon.

Guy A: C'mon man, 100 dollar rule! She's just using you for your money...you should have gotten laid!

Ex2. GUY 1: So how did the dinner date go last night with that chick with the big t&a last night?

GUY2: I ended up spending $100 on a seafood dinner & drinks then we went back to her place and tapped that ass all night. I even got a tossed salad from her!

Guy 1: NICE! She passed the 100 dollar rule...she's a keeper!
by DeMan7669 September 28, 2013

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt