I really like this one, you surely play with a nice possibility: the scouter. The only thing I am not sure about is putting Yamcha drunk... that is a bit OoC.

Overall, it is a very original one-shot.

Very interesting start! I really like the thought of Bulma messing with the scouter and listening into Vegeta and Nappa while they travel to Earth.

I'll patiently wait to see what other ideas you will come up with