Most people will say its someone who will shoot anything they see, but there's a whole other definition for it. Trigger Happy can mean someone is happy uncontrollably, they'll see something and they're happiness is triggered.
Person1: *smiling and giggling uncontrollably*
Person2: what're you doing?
Person1: Sorry, I got really Trigger Happy
Person2: what're you doing?
Person1: Sorry, I got really Trigger Happy
by perkymox January 12, 2021
Get the Trigger Happymug. by backinmyday December 24, 2011
Get the Alternatively Happymug. When you've gotten drunk off two glasses of wine and are feeling very happily attempting to convince people you're not drunk.
by Stoudonym March 23, 2019
Get the Happy Tipsymug. A male who, if home alone, will stay in the bathroom and masturbate for an extended duration of time.
"Dude your parents were gone yesterday! did you get shit faced?" "No Celeb Jihad uploaded new videos and I pulled a happy famper."
by Helmbros June 3, 2014
Get the happy fampermug. When you notice your girlfriend is happy and you decide to surprise her with cumshot attack just to ruin her day
Ahh man jenna was bragging about how good her day was so I hit that bitch with some happy mayonaise just to shut her up
by chubbzilla April 24, 2016
Get the happy mayonaisemug. 
Scott MD: How are you doin' today?
Jeff: Never better, doc.
Scott MD: Dude, you're one strong, happy hypoxemic Covid patient!
Jeff: Never better, doc.
Scott MD: Dude, you're one strong, happy hypoxemic Covid patient!
by timlight April 25, 2020
Get the happy hypoxemicmug.