There’s a lot of articles on the internet these days that include crazy lists from places like Buzzfeed to Business Insider. I haven’t seen many BJJ related list articles so now it’s our time to shine. Here are 13 things only people who have served time on the mats will understand.

1. Any references to the word shrimp is not about the food, it’s about saving your ass.

2. When you mention BJJ to a friend and they think it’s Karate.

3. The phrase, “warm ups” has an extremely loose definition.

4. Color purple holds a lot more badassery than most could ever realize.

5. Don’t cross your feet if you have someone’s back. You know why.

6. When you come back from BJJ class with hickeys on your neck, it can be tough to explain to your girlfriend and coworkers.

7. The strange habit to go for double-unders when hugging pretty much anyone.

8. OSS. Enough said.

9. No Gi – the only variation of a sport that is named the absence of something else.

10. “Rolling” is what we say to each other, but “fighting” or “sparring” is what we say to impress our non-BJJ friends.

11. Sloth grip is king, save the thumb destruction for another day.

12. You know what, “Answer the phone” means.

13. Twister isn’t just a game, it’s a spine destroying workshop.

13.5 Rear naked choke isn’t from 50 shades of grey.

Do you have any to add?