Here is a concise summary of the provided transcript:
**Title:** Epic Prank Revenge on Marcus
**Summary:**
* The narrator, Steve, plans to prank his friend Marcus, who has been pranking him lately, especially with a puppy.
* The prank: covering Marcus' house with thousands of pictures of his high school ex-girlfriend.
* Steve and friends rush to set up the prank before Marcus returns home, which they expect to be in 30 minutes.
* When Marcus arrives, he's caught off guard and reacts angrily to the prank, feeling creeped out and embarrassed.
* The prank escalates to the point where Marcus, already having a bad day, becomes frustrated enough to consider leaving.
* The video ends with Steve reflecting on the prank's success, apologizing, and hinting at a potential fallout in their friendship.
Here are the key facts extracted from the text, without opinions, numbered and in short sentences:
1. The speaker is planning a prank on someone named Marcus.
2. Marcus had a girlfriend in high school.
3. The speaker has thousands of pictures of Marcus and his ex-girlfriend.
4. The speaker intends to tape these pictures all over the house.
5. Marcus is initially not at home, and the speaker is tracking his location.
6. Marcus is expected to return home in 30 minutes.
7. The speaker and others hurry to set up the prank before Marcus arrives.
8. The pictures are placed in various locations, including the bathroom and living room.
9. The speaker Facetimes Marcus while setting up the prank to gauge his location.
10. Marcus arrives home, and the speaker captures his reaction on camera.
11. Marcus is upset upon discovering the prank and asks to stop being filmed.
12. Marcus mentions having had a bad day and feeling unwell (nauseous).
13. Marcus temporarily leaves the premises in response to the prank.
14. The speaker and others begin cleaning up after Marcus leaves.
15. The video ends with the speaker apologizing and hinting at a next video.