You can use it as an adjective. For example, you can use it towards a female, which can have a negative or positive connotation. E.g. A very heavy set woman walks by "man she's a trufa".
You can use it as an exclamatory statement. E.g. Boy was I drunk last night "Trufa doe!"
You can also use it as a verb.
E.g. A boy gets an A+ on his speech. "Man he trufa'd that speech, he trufa'd it".