This is an animated reaction gif of actor Antonio Banderas sitting back, putting his hand up to his mouth and closing his eyes as he savours the moment. Clearly, he has seen something that he likes on the laptop in front of him. This is sometimes used whenever somebody witnesses something great online, such as a witty retort.
The scene is from the movie Assassins (1995), in which Banderas plays the character Miguel Bain. This is after he realizes that he has just been asked to assassinate one of his competitors.