A dog, usually small and yappy, that is unwillingly acquired when a sexual partner moves into ones residence.
"Dude!! My girlfriend gave me a STD!"
"What, like herpes or something?"
"Nah man, a sexually transmitted dog. A white, fluffy, irritating Maltese Terrier named Paris that yaps all night and poops on my lawn. I so would not have slept with her if I knew that she was a carrier."
When you're on an instant messaging program, and you copy and paste something someone else has instant messaged, and you end up getting their font style.
Oh noes! I copied what you said on AIM and you gave me a textually transmitted disease!
Instead of saying, "I just got canned" or, "I worked my butt off for that company for years and they laid me off with a lame severance" you can simply say "I'm in transition."