What's the scariest bug you've found in your house. What's the story behind the encounter?

For me the scariest bug encounter was actually a harmless one(still scared me). My sister was trying to tell me there was some weird bug in the bathroom. I looked around and didnt see it. Well the house centipede decided to come out while i was taking a shit later that day. Not a fun time. I was so grossed out by it I tried drowning it since it moved to my bathtub. Didnt work, so I had to smash it since we didnt have spray and theres no way in heck i was picking it up.

There was this time a wolf spider appeared in my bathroom but at the time I lived with my dad so thankfully he took care of it.