Tigger as a verb means to break beyond repair.
He came round here the other night and completely tiggered my hifi.
He tiggers stuff just by standing near it.
Despite the fact that he tends to refer to himself in the third person sometimes, as well as in a plural tense, his theme song claims that he's the only one.
Pooh: Oh, you scared me!
Tigger: Uh, sure I did! Hoo-hoo-hoo-hoo! Everyone's scared of Tiggers!