Flower Happy is an episode from season six.
For unrecalled reasons, Jordan's House was cursed. The entire top half of it was torn off, leaving only the bottom floor's floor and some furniture. Whenever anyone entered, they would turn 'girly', doing everything from ballerina dancing to childish tea parties.
In the end, Mewtwo tore the land out of the earth and sent it into Subspace.
"Jordan's house is a trap that makes you 'girly.'"