Good Riddles

 
Venom (medium)

Question: A man obtains a vial of the deadliest venom on earth. A single drop could kill a fully-grown man within seconds. He drinks the entire vial and after a minute, he is not harmed. How did he do it?

Question: I am flat, I am sharp; but I cannot hurt you. What am I?

Old Memories (medium)

Question: I may have come in last but I'm still on top. What game are we playing?

Home (medium)

Question: A man leaves his home, takes 3 lefts gets to home, but there is 2 men with black masks on them, who are these 2 men?

Question: Although I am important to you, I am but a mere illusion. My beginning is as unknown as my conclusion. The more that you think, the more that I appear to pass. When you are in pleasure, I tend to escape your grasp. What am I?