That gets a small laugh, Trunks leaning forward to show Cosmo, with his own can--but of soda. "You lift that tab, and then you pull it until it opens. Do not shake it though. This is called a canned beverage."

Trunks is used to taking things seriously, especially if they don't look like potential-threats. With Cosmo, he'll probably have to learn when the man is joking versus not. "From talking with some of the others, I'm coming to realize that while I'm from Earth, and there might be some cultural things that are the same--I'm from a different Earth than a lot of people here." Not just a different time, sadly.