A virus-like program that pretends to be something else in order to get into the system.

From _The Iliad_, by famous dead poet Homer, when the Ithacans gained victory by hiding in a huge wood horse so they could get into Troy.
The Trojans were not in the gifted program at warfare school.
by Larstait November 06, 2003
A virus, that disguises itself, gets into the system, and slowly destroys everything... Allowing various other infections to get in, causing more damage. Also, letting your computer be controlled by someone else.
Damnit!! I need to get rid of this Trojan Horse before it destroys my hard drive!
by _Trojan_ December 21, 2008
When someone does something to make you think one thing when in fact they are going to do the exact opposite.
Tennessee quarterback Jonathan Crompton played terrible this year against UCLA so Florida (their next opponent) would gameplan against the run when actually Crompton was so good and was going to Trojan Horse them and kill them.
by CrompDaddy8 January 04, 2010
The act of a male sellotaping his penis to the back of his hand, Then asking a female to finger her. once she agrees and you have entered slowly remove your hand fuck her silly.
Dave:So I heard your babe only lets you finger her
Steve: Nah I totally trojan horsed that whore!
by Mattbobman June 20, 2011
a virus tht is seemed to be known quite a lot due to lot of computer infections due to this
my computer has been infected with bloody trojan horse!!!
by VicBat July 02, 2005
A sex partner who is very attractive and appears to be healthy but is sporting a hidden STD.
Ted: "That goddamn Heather is a trojan horse!"

Kevin: "What do you mean? She looks hot!"

Ted: "The bitch is a walking petri dish! Last week she jumped me without a rubber and now the end of my dick is on fire!"
by Connie Lingquist November 03, 2010
A devious sexual act whereby the male pokes a small hole in the tip of the condom before intercourse.
note: This is refrence to the siege of Troy whereby soldiers (semen) snuck into the city disguised as a gracious gift of sorts.
Betty is pregnant, that is because that bastard Jim gave her the old trojan horse.
by admin@jordantate.com October 05, 2004

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