We all have that one regrettable photo from childhood that still makes us cringe. As a teen, we might have sported a look that we thought made us look cool but looking back at photos from that time now makes us laugh and cry. The idea of 'cool' is different now so these old photos look bizarre.

But what makes these teens want to appear cool? "It's during the teenage years that the ego is being formed and entrenching its identity. The ego loves to be cool because it will feel more powerful. Its sense of self-worth is being established and it gains a hold on your teenager until they can learn to strike a balance between their true self and ego self," suggests Parenting Teenagers Academy. Teenage and young adults are often harmless rebels who try to express their rebellion by dressing radically but sometimes end up looking hilariously weird. Since laughter is the best medicine, this Subreddit, Blunder Years has a collection of regrettable and funny photos of people donning weird-looking sunglasses, old-fashioned pants, and comic hairstyles. The people are laughing at themselves and at others in these "blasts from the past" images on the Reddit community.

The Blunder Years subreddit encourages people to share their "dusty treasures with the world" and it already has 853k members in the community. We have gathered 25 of the funniest images of people that are the epitome of 'cool'.  

1. The background

2. Their sunglasses

3. Hahaha, expression

4. Looking cool

5. Rocking.

6. The outfit

7. The signature photo angle

8. The "cool dudes" from 2007

9. The excitement was real

10. Two BFFs in high school

11. Quintessential 2000

12. Hahaha

13. The headgear

14. Hilarious hairstyle

15. So gothic

16. Cut your own hair with your father's razor

17. Electric

18. Passport photo from 2005

19. Cool sign learned from dad

20. Classic 80s

21. Hair in year 11

22. Expression circa 2000

23. Felt cool punk in 2004

24. OOTD

25. An Older version of Russell from UP