Well, it's kinda hard to write about one particular dream because I have ADD and my dreams change topics about 8 times a night. But here's one topic from last night:

I was sleeping in someone's house, it might have Auntie Leah's. But me and Derek, my cousin, were sleeping in the same room. All the sudden, he screams and I look over to see that a snake has bitten him. Somehow, I know it's a rattlesnake, but just to make sure, I grab it by the tail, hold it really high, then drop it off the bed. Sure enough, it get ticked off and starts rattling. Derek tells me to get help, and I ask him how long until rattlesnake venom takes to kick in, and he guesses 10 minutes, but I tell him that that's way too long because I remember seeing a thing on Discovery about rattlesnakes (In real life) So I tell him it's probably more like 6-8 minutes. He agrees with that, and I go to get my mom.

I scream and run for her, and the entire house wakes up. So everyone is in my room and somehow my brother finds out about me saying it takes 6-8 minutes for the venom to work and he argues with me, saying that it only takes 1 minute. So the rest of the dream is us arguing. So I guess I have 2 questions: 1) being what the dream means and 2) being how long does rattlesnake venom take to kick in.

I don't know how long it takes rattlesnake venom to kick in. You can look it up on Google.

It sounds that the snake represents a problem that is bothering you. Part of you wants to do something about it right away, but another part of you, represented by your brother, is telling you to wait.