trump is famous for demanding a percent cut for himself.
So what Hume is saying is that trump wants a 5% cut of the federal budget for himself.
he does talk a lot about self enrichment, so maybe it is not a joke.
bullshit
bull·shit (bo͝ol′shĭt′)
n.
1. Foolish, deceitful, or boastful language.
2. Something worthless, deceptive, or insincere.
bull·shit·ter
/ˈbo͝olˌSHidər/
noun
1. a person who exaggerates or lies.