When you are playing a sport such as football or rugby, there are certain matches and certain occasions where, at the end of the game, you will go to another player from the opposite team and you will swap shirts with them.
There are some sport stars who have a huge collection of shirts from some of the greatest players in their sport, with rooms dedicated to showing them off to anyone who comes to visit.
However, when it comes to rugby, there is one man who clearly does not have a need for such a room, since he does not even like to swap shirts in the first place.
Sam Warburton is the former Wales captain and has come up against some of the greatest players to ever pick up a rugby ball, so you would probably assume that he has swapped shirts with a few of them along the way.
This is not the case, though, and Warburton has recently been talking about why he never swapped shirts with any players from the opposition, claiming that it is more to do with not wanting to go begging for a shirt, instead insisting that they ask him first.
Warburton was talking to Scrum V, when talk turned to what shirts he has in his collection.
He admitted that he doesn't swap shirts often and that when people ask why he does not like to swap jerseys, it really is quite simple.
Warburton said: "I don't want to give them, or give them the perception that I am giving them respect, you know, I just want to be this young guy who just doesn't care, who just wants to play and just wants to knock his head off, I don't want to go asking him for his shirt.
"If they want my shirt, they can ask me, but I'm not asking them for a shirt."
With that said, though, the rugby ace did recall a match back in 2012 when he did manage to swap shirts with Australian star David Pocock, although he did make sure that his rival asked first.
He explained: "I remember it was 2012 and we played Australia, and Pocock is somebody I've always really admired to play against.
"When I went out there, I was undercooked and I played badly for three games, well not badly, but I was under par for three games.
"They all come swapping at the end of the test series and the boys were like 'Are you gonna go swap with Pocock?' and I was like 'Nah, I'm not. I don't ask anyone. I'm not gonna ask him.'
"But then he came in and then he said 'Do you wanna swap?' and secretly I was really happy he come in, because he's somebody I really do respect and I got his shirt, which was great."