This guide will tell you how to show or use emotes in GTA 5. Go through the guide and follow the simple steps to do so.
First, you have to boot up your game and then if you are playing the game on a PC, you need to press the M button on your keyboard to open the interaction menu. Then go to the style tab. Then you have to scroll down until you find Action and then select the action which you want to do. All these actions are emoted.
If you want to open the emote menu without going into the interaction menu, then you have to press the caps-lock button twice continuously and your character will start doing the emote dance or whatever you have selected.