Here is a concise summary of the provided transcript:
**Title:** Revenge Prank on Brother David
**Initial Plan:** The speaker plans to prank their brother David by throwing him into a neglected, green, and allegedly "toxic" pool as revenge for a previous prank. David is afraid of the speaker and the pool.
**Execution & Unexpected Twist:** The prank is executed, but unexpectedly, David gets injured (a superficial cut/scratch) while getting out of the pool, leading to bleeding.
**Aftermath:** The speaker is shocked and apologetic, explaining that the injury was unintentional. David is tended to with a bandage, and the speaker assures viewers that David will be fine, to be shown in the next video.
**Closing:** The speaker reflects on the prank's unexpected outcome, invites viewers to like and subscribe for more content, and hopes that the prank war with David won't escalate further.
Here are the key facts extracted from the text, without opinions, with each fact numbered and in short sentences:
1. The speaker is planning to play a prank on their brother, David.
2. The prank is in response to a previous prank played by David.
3. The prank involves throwing David into a pool.
4. David is scared of the speaker.
5. The pool is described as "toxic", "totally green", and lacking chlorine.
6. The pool has algae, making the water appear green.
7. The prank is being recorded for a video.
8. The speaker is nervous about how David will react.
9. The water in the pool is quite cold.
10. The speaker wore neoprene when they last entered the pool.
11. David got hurt during the prank, injuring his leg.
12. The injury was severe enough to cause significant bleeding.
13. Due to YouTube rules, the full extent of the wound cannot be shown.
14. David was given a bandage to treat the wound.
15. The speaker claims the injury was a normal, superficial cut.
16. The incident will be followed up in a future video, showing David's recovery.