similar to that of your pajamas, but describing the scantily clad outfit you call a nightgown. Sleeping in boxers or panties only.
by Akili Smith June 2, 2007

by MacTavish March 7, 2009

"Hey Pat can you come out and do something?"
"No its Family Night I have to play a Foreign Dice Game with my family. Its so much fun. See you later."
"No its Family Night I have to play a Foreign Dice Game with my family. Its so much fun. See you later."
by Smithers john January 31, 2009

people who suddenly become sexually active or horny only by night, never during daylight hours. usually appear quiet and shy by day but change by nightfall.
by fergz December 2, 2007

Silvía Night is a fictitious character on Sjáumst með Silvíu Nótt, an Icelandic semi-reality show on the TV channel Skjár 1. She is probably the greatest human being on the face of the earth. YEAHHH SILVIA!
by Claire!!!!!!!!!! June 11, 2006

A slang term used to describe someone or more than one person (can be as large as a business or any other entity) who is extremely unreliable, unless they want something from you. To put these dirtbags in their place, one must confront them directly face to face. This term is different than a flake, as a fly by night DOES contact a person, but only when they want something, whereas a flake or flaky person DOES NOT.
Tim was such a fly by night about turning in that homework for our group, he got us an F! But then when he wanted a ride home from the bar, he contacted us left and right! That guy can walk his ass 3 miles to get home!
Kurt's fly by night attitude caused him to not be liked by his friends, and for him to only get sex from more undesirable types of women with hairy vaginas.
Kurt's fly by night attitude caused him to not be liked by his friends, and for him to only get sex from more undesirable types of women with hairy vaginas.
by johnnyb69 January 31, 2010

*Harry and Ron are on the Hogwarts Express: Ron is looking for something in his bag and Crookshanks jumps out* *Cat yowling and Harry + Ron screaming* *Hermione enters and grabs Crookshanks and says: Sorry, sometimes he just crawls into the darndest places.* *Ron replies: It's okay, just next time -- OH MY GOD NIGHT TROLL!
by 07pr12 June 16, 2011
