Riddle: What word can be grammatically correct, when used consecutively in the English language?
Answer: Had:'"James while John had had had had had had had had had had had a better effect on the teacher" is an English sentence used to demonstrate lexical ambiguity and the necessity of punctuation, which serves as a substitute for the intonation, stress, and pauses found in speech."-Wikipedia. Cool, Huh?
Riddle: I sit here collecting dust, I can wait forever to open me and you will not be disappointed, I can make you laugh, cry, and sad, I contain all the knowledge of the world, let me take you to a faraway land. What am I?