A best man dared to risk damaging his friendship by delivering a hilarious punchline during his wedding speech. See for yourself in the video below:

The pressure of giving a speech that is both humorous and heartfelt as a best man can be overwhelming.

Despite the pressure, best man Derek was able to overcome his nerves and deliver an outstanding speech.

The groom and brother, Gary, who is Scottish, was not prepared for what was to come.

After getting married to Kirsty at Doubletree Dunblane Hydro in Perthshire, Derek took the stage.

TikTok wedding photographers, We Are One Wedding Films, shared the viral video on social media, which features Derek sharing a story about a memorable Christmas that Gary and his partner had spent together.

He says: "One Christmas morning, I got up in my mum and dad's house, buzzing I may add. Walked down the stairs to open my presents only to be greeted with a slap from my mum. 'What did I tell you about bringing folk back here?'

"I say, 'What are you talking about mum, I've been in my bed the full night'."

"Obviously she's not thinking about golden child next door."

Derek goes on: "So we're in the living room opening a couple of presents, me, my mum and my dad, and we hear rustling from the wee room in the auld house, as we called it."

"At this point I go up the stairs, open Gary's room, and there you have it, Kirsty Currie, lying with her legs at ten to two."

"She certainly never came down the chimney in that position anyway. Merry Christmas, Kirsty."

It is safe to say that neither Gary nor his bride were expecting Derek to share that specific story, which caused them both to burst out laughing in shock.

However, the story was well-received by the guests, who can be heard laughing uproariously in the background of the video.

The video was captioned: "This could be the best punchline from a best man's speech ever."

It is hard to disagree.

Since it was posted, it has been viewed over 4.5 million times and has received thousands of comments.

One user said: "The absolute fear in the groom's eyes. That's when you know the speech is going to be good."

Another added: "The Scottish have a way of telling stories that isn't matched anywhere."

"She's a good team player, love the way the bride laughed it off," wrote a third.

Another added: "10-2 got me, she was mortified."