You have to bear in mind, there's a good chance they don't care about it as much as you do, we all have querks that make us who we are. As above, just embrace it, its part of you, don't try to hide from it, make a joke about it, make light of it, once I started cracking my own jokes about it it became so much more livable. Chances are people don't actually care about you stuttering and will gladly wait for you to finish or try to help. If anyone does take the piss maliciously, well then then they're just a piece of shit.