By defeating him in battle.
You have to press X really, really, fast.
Ok... first of all its FAWFUL not "farful" this is how you do it... You need to keep pressing x repeatedly until he go's in it actually works trust me. You fight him inside bowsers body as Mario and luigi (for a bit).
You keep repeatedly pressing x faster and faster that should help
You have to be Mario and luigi then you need to go to bowsers leg (leg outpost) then you should know what to do then. good luck! ^.^
You can get Beans, and an SP: Magic Window.
You can only do it with Mario and Luigi. For Mario, press A. For Luigi, press B.
not really
no
noone
You have to complete the pumpworks level
There are only 2 files in Mario and Luigi Bowser's Inside Story.
Well you've got to get bowser to inhale him when dark bowser spits him out when you punch him in the belly. Attack the eyes first because he will hide his legs.