"LMAO Fourth Doctor hates the Master" Four's whole character is acting childish and rude because he's actually sensitive and wants to be loving but can't handle confrontation. He's just been forced back to his home planet, an incredibly traumatic place and sees his best friend in the entire universe painfully ROTTING ALIVE. Ofc he's a bit standoffish, of course he's trying to act like he doesn't care because that's what the Doctor (especially this version, but you can make an argument every Doctor pulls this) usually does in response to trauma, hides his incredibly damaged emotions, his fear and rage and sorrow. That's who he is!! It doesn't mean he doesn't care! That's what he wants you to think, that's what he wants to think!