It's that time of year again!
deviantART: http://madizzlee.deviantart.com/journal/Introducing-thoughtART-Create-With-Your-Mind-442960121 (sadly, you have to have an account to play with the 'Create' option)
reddit: http://www.redditblog.com/2014/03/headdit-revolutionary-new-way-to-browse.html (note: this actually works)
Guild Wars 2: http://www.reddit.com/r/Guildwars2/comments/21wcjv/my_head_is_huge/ (your head also wiggles and bobbles when you move. All the NPCs also have big heads.)
Feel free to post other pranks you come across.
Grayling (Creative Writing) - Visions of Gray (Tulpamancy) - Lyric of Tyria (Guild Wars 2, WIP)
Other names: Falunel.7645 (Guild Wars 2) - Falareste (deviantART)