An idea that was VERY poorly thought out. Usually the first thing that comes to mind.
Marta: Hey guys let's all be the Wizard of Oz for Halloween! Friend 1 can be Dorothy, I'll be the Lion, Friend 2 can be the tin man, and Friend 3 can be the scarecrow!
Friend 2: No. And you forgot Friend 4, Friend 5, and Friend 6. 'Tis a Marta Idea.
Marta: Hey guys for Friend 1's birthday let's surprise her with a party at the mall!
Everyone: Ok...sounds reasonable...
Marta: I'll be there with her and we'll see you there kthxbai.
*Day of Surprise*
Marta: Hey guys I told Friend 1 about the surprise, but she'll act surprised. And yea sorry, I can't make cupcakes. And she's getting bored. You all ruined this surprise.
*2 hours later*
Marta is no where to be found. She and Friend 3 have disappeared into the mall, leaving everyone else.
Friend 1: WORST BIRTHDAY EVER WHOEVER PLANNED THIS IS STUPID OMG I'M GONNA GO CRY.
Everyone: 'Tis a Marta Idea.