Google Photos knows everything about you, and by "everything" we mean everything. Yes, including your 4/20 activities. Your smoke vapors have gone all the way up to its cloud servers and it can find every single one of them. You must have thought this is pot-entially harmless, but knowing Google, that weed be a little naive. 

In case you can't tell from the screenshot above, Google Photos finds relevant results for a "420" search. That might come in handy if, for some reason, you don't recall the exact events around a certain timespan.

Alternative titles:

• Google Pot-ohs knows what you've been smoking but is not ganja tell on you
• Android P is for Pot
• Turns out Bugdroid is green for a reason
• Google Photos knows what you've been smoking, is more disappointed than angry
• Google Photos is going off with a bong
• Google Photos gets kush sync
•  420 blaze it: Google Photos is slightly dazed, looking for Starbursts
• Google Photos knows if you're holding [It'd be a lot cooler if you were]

Thanks: David