placeboing 

placeboing is when you take something you think is a drug, but isnt, and instead of tripping on a drug you trip out because your brain thinks you took a drug. causes anything from mild paranoia to city-wide power outtages.

Dude, i ate this shroom i found on some shit and went crazy. didnt see any purple ninja unicorns though..

You were probably placeboing dude.

placeboing by wishiwasbritish May 18, 2010

Placeboi 

A male fan obsessed with the English rock band Placebo. Especially Brian molko.

Placeboi's usually dress in black and wear eyeliner. They unabashedly wait hours to be front row at placebo concerts.

Placeboi by bahhh678 March 5, 2015

Placeboism 

Placeboism was founded by freakbymistake and drink_u_pretty_ to honour and worship the band, Placebo. We believe in polytheism because we worship THREE Gods: Brian Molko, Stefan Olsdal and Steve Hewitt

Dear Gods that are Placebo please make my mother buy me your album for my birthday

Placeboism by DeeDee Ramone January 2, 2005

placething 

a place, or area that you can not remember the name of.

I'm going to go to that placething later today with my friends.

placething by XxJaggedXHeartzxX March 12, 2011

Placeboner 

An erection a man gives himself when he's really not that into a girl, but he psyches himself up to do the deed.

No babe, this isn't a placeboner, now put the bag on your head.

Placeboner by ShadowEan July 21, 2019