Today's Parola del Giorno is the pronominal verb sbizzarrirsi, which means to indulge oneself or to satisfy one's whims. 

With the preposition a + infinito, the expression can mean to have a great time doing something.

Sbizzarrirsi is also an -isc- verb.  The past participle is sbizzarrito.  Essere is used in compound tenses.

See the expression used below:

Via Condotti è piena di negozi d'alta moda e gioiellerie in cui è possibile sbizzarrirsi alla ricerca del capo o del gioiello più elegante e sofisticato. Ovviamente bisogna avere ingenti disponibilità economiche per potervi fare acquisti!

Via Condotti is full of high end shops and jewelry stores where it is possible to indulge oneself in search of the most elegant and sophisticated item or piece of jewelry.  Obviously, one needs to have huge financial means to be able to go shopping there.