I took 2mg at around 8pm on a Friday. Sat on my couch watching TV. An hour later, I felt completely sober. Not relaxed, not calm — sober. Like I hadn't taken anything. So I took another 2mg.
This is the last thing I clearly remember until Sunday afternoon.
Piecing together the evidence: I took more pills at some point — the bottle was nearly empty, maybe 6-8mg total consumed over the night. My browser history showed hours of online shopping — I'd ordered $400 of random items. My fridge was empty because I'd apparently cooked and eaten everything in it. Texts to people I hadn't spoken to in years.
The "delusion of sobriety" is the most dangerous property of benzodiazepines. The drug impairs your judgment about how impaired you are. You feel stone sober while behaving erratically. And because it also impairs memory formation, you redose because you genuinely don't remember taking the last one.
This is why people end up in the ER after taking "just one bar." They took one, felt sober, took another, felt sober, took another. Each dose further impairs the judgment that would tell them to stop.
If you use benzodiazepines: lock up the bottle after taking your dose. Give the rest to someone you trust. Set phone reminders that say "you already took your dose, do not take more." This one property of the drug kills people.