Riddle: I may be simple, I may be complex; I may have a name, but no gender or sex; I am often a question, or statement as a setup; I tend to have an answer, 'til you find it I won't let up. What am I?
Answer: A riddle.
Riddle: I'm first found in caves, now prolific online; I'm a depiction, a drawing, a symbol, or sign. I'll convey whichever mood you could wish; or for that matter, a fist, flask, or fish. What am I?
Answer: An emoji.
Riddle: What do you call two math friends?
Answer: Algebros!!
Riddle: I am wasteful, but home to those unwanted. What am I?
Answer: A bin
Riddle: I can be an end to all words but am never spoken. What am I?
Answer: A Full Stop.
Riddle: I am not visible, tangible, or corrupt. I am genuine, given, and real. It takes three of these to figure out what is left. What am I?
Answer: Right.
Riddle: When in hot water I get harder. I am only useful once broken. Some people eat only the white part for its low fat, high protein nutritional content. What am I?
Answer: I am an egg.
Riddle: I am heard before I am seen. Startled and I am alive. I rumble like thunder, yet I pour like rain. I am felt before I arrive; stand with me and you won't survive. What am I?
Answer: Stampede.
Riddle: What is hard to find but easy to lose, worth more than gold but costs less than a penny?
Answer: A Friend.
Riddle: Spelled forwards I'm what you do every day, Spelled backward I'm something you hate. What am I?
Answer: Live <-> Evil.