Here is a concise summary of the provided transcript:
**Setup:**
A prankster plans to play a trick on his girlfriend of almost 3 years, who he claims is "crazy" and "not nice and innocent". He buys lingerie in a large size and a color she doesn't wear, intending to place it in a suspicious spot to make her think he's cheating.
**The Prank:**
He sets up a camera to capture her reaction and waits. When she discovers the lingerie, she becomes enraged, accusing him of infidelity and packing her bags to leave.
**The Reveal:**
The prankster reveals it was all a joke, attempting to calm her down and apologizing. The girlfriend is initially furious, but the situation eventually leads to a lighthearted and playful conversation about the prank.
**Outcome:**
The couple seemingly reconciles, with the prankster relieved that the prank didn't end in disaster, and the girlfriend, although initially livid, appears to forgive him.
Here are the key facts extracted from the text, excluding opinions and keeping each fact as a short sentence with a number:
1. The speaker is planning to perform their first prank on their YouTube channel.
2. The prank involves buying female lingerie to make it seem like someone else is involved with the speaker's girlfriend.
3. The speaker's girlfriend had been away in New York for two weeks and returned two days prior to the prank.
4. The speaker and their girlfriend have been together for almost three years.
5. The speaker plans to set up a camera to capture their girlfriend's reaction to the prank.
6. The camera is set up in the bedroom, near a bed and a painting.
7. The speaker buys a large size of lingerie, specifically a red set, to use for the prank.
8. The girlfriend arrives home and discovers the lingerie, leading to a confrontation.
9. The girlfriend initially thinks the speaker is cheating on her and packs her bags to leave.
10. The speaker reveals to the girlfriend that it was all a prank.
11. The girlfriend is upset and angry with the speaker, but eventually forgives him.
12. The speaker acknowledges that the prank tested the trust in their relationship.