One clause or two?

Just struggling to workout whether or not this sentence contains a one clause verb phrase or two separate clauses. Wonder if anyone could help..

Here is the sentence: 'It sometimes used them to poke fun at politicians'

My gut feeling is that there are two separate clauses going on in this sentence - 'used them' and 'poke fun'

Am I wrong? Is it two separate clauses or is 'used them to poke fun' one clause?

Thanks!