eat a lot of nuts, sunflower seeds, and soy cheese.
i did that for a few days and gained like 15 pounds.
hahah.
(i'm not even kidding.

)
..and then eat some bread on top of that.
with peanut butter.
and then have sushi.
and some fish.
and then eat some legumes. like lentils.
with brown rice.
and beans.
and then have dessert.
haha
you'll be bulky in no time... trust me.