You know you're a pony collector when ...

[dragonfly]

you have to elbow all the little kids out of the way at thrift stores to dig around in the toy bin
(share yours!)

[okamigirl64]

When little kids come over to your house and you have to yell at them when they try to touch the ponies.

[Leave a Whisper]

You go to swap meets and thrift stores just for ponies.

When most of your eBay watch list and followed searches are composed of ponies.

[Bommels]

When you've recruited your whole family to keep a lookout for ponies in the wild, and have painstakingly instructed them how to spot a real Hasbro pony.

[Duenia]

Cashier: "Would you like a gift receipt?"
Me: "No thanks"
Cashier: "Are you sure? Kids can be picky and tend to get double gifts."
Me: "They're for me."

[Anitas_Mom]

People see your ponies and ask, "How many grandchildren do you have?" 

[NigheanRuadh]

...your sister gives you first choice of the ponies that her daughter is getting rid of, before passing them on to the other nieces and nephews. 

[NovelNerd]

Your ponies have their own cleaning supply cabinet in the bathroom.

[SilverHorsey]

When you search through toy boxes in thrift stores more thoroughly than kids do in hopes of finding ponies.

[Miniature Sheep]

You end up having to put up extra shelves specifically to accomodate your ponies!

[Leave a Whisper]

When you justify adding just one or two more ponies to your wish list limit and somehow end up with 20 more then you meant to have.

True story

[CloudyGlow]

You can spot the lone pony at a yard sale when you drive by

[SkyCakes]

Thinking about your next pony room and what you can put in it and wondering if it could be the master bedroom for the ponies just need all the space they can manage.

[Artemesia's Garden]

When you have a storage problem but dedicate a whole double cabinet to ponies.

[Jorgito93]

When a little girl you know is so impressed by your collection that she tells to her friends that she knows a 16 year old boy who collects ponies.