When I first saw Ben 10/Generator Rex heroes united I was very happy! I love those two and it's really a beautiful thing that someone decided to do this cross-over Well, I saw the italian version, so they said different things and I didn't understand the 'LOL thing' in their sentences xD (In italian plumber means 'idraulico' but in the italian versione they call them also 'risolutori' and it isn't so different .-.)
Yeh I know it. I mean I didn't understand why they were laughing, because in italian they didn't say "Ora io Gwen e Kevin siamo gli idraulici (plumbers)" but something that in english means "solvers" (Risolutori). So it hadn't anithing funny.