This face used to be a part of Advanced Lag Sim - https://scratch.mit.edu/projects/1290821955/ but he got tired of waiting so long to crash, so he decided to pull a "fine, I'll do it myself" and tries and ends things a little faster. What causes the lag? literally 3 blocks of code (the forbidden combo)
NOT ACTUALLY ADVANCED it requires 3 blocks of code to do this, if you really want advanced try https://scratch.mit.edu/projects/1290821955/ (even though it is more advanced, it crashes more slowly than this one)