The act of a player lifting their shirt is not a reason to be cautioned. However, if done immediately after scoring a goal, and in other circumstances, it can be seen as intimidation, mockery, or provocation of the opposing team. This is unsporting behavior, and often earns a caution and yellow card.
You can but you will be cautioned for it.
Yes.
1
It took John Radford 306 games to score his 100th goal for Arsenal.
It took Ted Drake 108 games to score his 100th goal for Arsenal.
It took Cliff Bastin 174 games to score his 100th goal for Arsenal.
It was scored by a goal keeper, take a look at this: youtube.com/watch?v=NpkO8zPtMVU
It took Doug Lishman 163 games to score his 100th goal for the Arsenal football club.
It took Joe Hulme 307 games to score his 100th goal for the Arsenal football club.
It took David Jack 156 games to score his 100th goal for the Arsenal football club.
It took Dennis Bergkamp 296 games to score his 100th goal for the Arsenal football club.
It took Reg Lewis 152 games to score his 100th goal for the Arsenal football club.
It took David Herd 165 games to score his 100th goal for the Arsenal football club.
It took Joe Baker 152 games to score his 100th goal for the Arsenal football club.