one that can be called upon to arrive at potentially dull party events when numbers and moral are low, bringing large groups of partying types to liven up and save not only the party but the reputation of the host.
-hey gazza this party is sucking bro! anything we can do to liven up the night?
-yeah mate im all over it. il give my mate steve a call. that man's a portable party! he'l bring a truck load of people with him.