Pre-Order

Going after someone for romantic or sexual advances that is two years or more younger than yourself. Commonly used with the word Post-order. Used by all sex's since it was made for all sex's

Finn told me he was talking two a girl and I asked her age since he just turned 18 so he said she was 16 but turns 17 in a couple of weeks I told him he was pre-ordering so he should stop talking to her.

Post-Order

To go after someone two years or more older for sexual or romantic advances. Commonly used with the word preorder. Any sex can used this word since it applies to all of them.

Jake went to ask his 40 year old math teacher on a date while he was in college before he could his friend told him he was post-ordering.