Ok so time to get rid of my leecher status.
So I found this out by mistake.
Setup - You need 3 people to do this. 1 person who is a zombie.
1. The person who is a zombie infects the other 2 people.
2. The 2 infected people now /duel
3. Get each other down to around 5%
4. The zombie kills 1 of the people and turns them into a zombie.
5. Now there is 2 zombies. The ORIGINAL zombie now kills the last person and turns them into a zombie.
NOW THIS IS THE CRUCIAL PART
6. The 2 people who are dueling both use their lurch then /forfeit the duel.
When your lurch is over you wont have the buff, but you will still have the +100% speed!