Pranks for a large group?

Question

so i go to a soccer camp as a senior next year and the seniors always pull funny embarrasing pranks on the freshman, so i need some ideas. there are about 20 freshman each year. please help

Answer 1

lead them into the woods and starve them.

Answer 2

take all their socks and underwear and freeze em.  

Answer 3

slit thier throats and leave them for dead.....

or you could hide thier undies