Why?

[Chocofreak13]

they bought them from the heavy weapons guy because everyone else was sold out.

[Nichi]

Everyone else was sold out because the 11th Doctor said "Bazookas are cool"

[Chocofreak13]

the 11th Doctor said "Bazookas are Cool" because he was paid.

[svx]

He was paid because there was well-documented research indicating that people such as him function better when they are given incentives like money in exchange for their work

[Nichi]

There was well-documented research indicating that people such as him function better when they are given incentives like money in exchange for their work because they were too busy to determine that Canadian bacon is ordinary ham

[Chocofreak13]

They were too busy to determine that canadian bacon is ordinary ham because people are too uncreative to make smooth literary transitions.[/courier]

[Nichi]

People are too uncreative to make smooth literary transitions because they suck at writing yet insist upon doing so anyway

[Chocofreak13]

they insist on doing it anyway because it's their passion.

[Nichi]

It's their passion because they have nothing better to do

[Chocofreak13]

they have nothing better to do because everyone else is busy.

[Nichi]

Everyone else is busy because they have school

[Simonorged]

Everyone has school because the government forces them to.

[Chocofreak13]

the government forces them to because it's part of a large, all-encompassing conspiracy to turn us into cybermen.

[NejinOniwa]

They want to turn us into cybermen because they are all secret Whovian zealots, and are 100% sure he will come if they convert enough people to be a threat.

[Chocofreak13]

they're sure he'll come because he always does.