even if 150 pounds its about 68kg...for height 171....consider
ok liao mah...
most people trying to lose weight, yet u want to gain
weight...*speechless* 
the cheap and unhealthy way is to eat non stop...meat...as fatty as
possible...people drink water u drink oil...remember...NEVER NEVER
NEVER move away from ur bed....lie there and sleep all day...if
this dont work then u better go get advice from a sumo...

the spend money and healthy way is to go gym...build muscles...if u
want can oso take supplements...then eat loh.