Convince the women of Fairy Tail to hold a kissing booth.

Needless to say, many ships sailed that day, and many men went home in full body casts.

Convince the guys it would be a good idea to prank the girls.

Every guy, except for Romeo because he isn't stupid, spent the next three weeks as stone statues after dying Evergreen's hair neon pink.

Tell Mira you ship 'GrayLu'.

If Natsu and Lucy ended up locked in a closet for the next few hours, well Mirajane had nothing to do with it.

Inform Elfman of Mira and Laxus' secret relationship.

He got so angry he used a full body take over to go confront Laxus.

Watch in amusement when he goes to confront Laxus.

The resulting fight ended up with a blushing Mira, an annoyed Laxus, and a knocked out Elfman.

Insist that Happy is really an alien from another world, come to kill everyone.

Levy tried it once. Saying that it explained why he was the only weird colored cat.

Convince Natsu of that.

It was funny watching him walk around with a tinfoil hat until he tried to make Lucy wear one too… Then it was hilarious.

Suggest a drinking contest to Cana.

The resulting party was so loud that the next morning Blue Pegasus came to complain, only to find everyone passed out with hangovers.

Out drink Cana.

Natsu passed out only moments after Cana. Making sure he won.

Suggest a 'Fairy Tail Pin-Up Calendar'.

Macao wasn't seen for three weeks after that. Romeo was just embarrassed.

Offhandedly remark to Natsu that Lucy and Gray are an item.

Natsu was so angry that the Guild Hall nearly burned to the ground as he stormed off to find Gray.

Offhandedly remark that Lucy and Gray are an item to Juvia.

Juvia was so upset that the Guild Hall nearly drowned in her tears.

Tell Juvia that there is a fandom for 'GrayLu'.

Her resulting thunderstorm lasted for weeks.

Give her exact details about her Lucy is right at that moment.

Lucy had overheard you telling Juvia and tried to hide.

Offer her many weapons with which to kill Lucy.

Erza had a wide variety from which to choose.

Convince Happy that Carla has a 'thing' for Lilly.

Cana had way too much time on her hands when she wasn't drinking.

Try to steal one of Levy's books.

Natsu learned this early on when she nearly killed him.

Tell Gajeel that Jet and Droy had plans to kidnap Levy and elope with her.

Without saying a word Gajeel stormed off taking Levy with him… They haven't been seen in two weeks, we worry for their health.

Tell Jet and Droy that Levy has run off with Gajeel and they are planning their wedding.

The resulting flood of tears almost rivaled Juvia's.

Smash Erza's cake.

Does this one really need to be explained?