What means this "suck up" you are talking about ?

boooooooooooooooooooooooooooooooooooooooooo im a veryyyyyyyyyyyyyyyyy friendly lion callled Parsleyyyyyyyyyyyyyyyim afraid only older english members will get this

 We want to get it too..

 like um say you work somewhere and there is this guy that is always taking your boss cups of tea or always spending time with your boss and never says anything bad about your boss. we say that guy is sucking up to the boss

and by the way, I aint doin no suckin up