On the Xbox 360 (and presumably the other consoles) version of the game you were able to walk up to people and press left and right on the dpad to either insult or compliment people, not really any use except it was a bit fun and a good way to start fights.
I can't for the life of me work out what the button is on PC for this. I'd have thought it was left and right arrow keys but this doesn't seem to be the case and I can't find a button for it in configuration.
Also, if I have more than one weapon in the weapon wheel slot (say if I have an Uzi and an MP5) I can't work out how to easily switch between the 2 minus by pressing the number key for that weapon slot repeatedly. Any ideas?