my older brother broke a few of my tf's when i was a kid when ever i'd upset him was really frustrating !!
the worst was breaking the arm off my g2 onslaught ruining my complete set of combaticons

but recently i had a friend visit with her kids and i let them play with the sky-bite i'd bought my gf ( she has a thing for sharks :S ) and now one of the fins seems to have mysteriously dissapeared