Two students solve the case of the watery ketchup by designing a new cap

[Teh One Who Knocks]

http://www.youtube.com/watch?v=7JTuEUSauc0

[FBD]

:-k gon be a bitch when the ketchup gets low though! :tup:

[Hugh_Janus]

because giving it a quick shake is so much effort....

[deebakes]

it is when you're wrists are tired :lwank::wank: