A prank is a practical joke on someone. I would watch "Prank Patrol" for some examples. Anyways, a simple prank is telling someone they're late for work/school, and messing with all of their clocks....
Jackass pranks if you want to get them mad, look up jackass bam margera pranks parents, or you could always go with something classic like selefane over the toilet seat to get a good laugh and not...
heres a really cool prank here are the steps first get some jello packs use yellowyour supposed to but you don't have to if you don't want and next you get a wooden spoon and then put the jello...