Comedy screenplay, good idea?

ok, so i have this screenplay in my mind and i need to know if it is good a guy picks up his friend on the street, his friend holds up a joint, however his friend is an jerk and he thinks it is fake. Eventualy he is pulled over and they both spend the night in a dallas city jail. After getting out they get in a... show more ok, so i have this screenplay in my mind and i need to know if it is good

a guy picks up his friend on the street, his friend holds up a joint, however his friend is an jerk and he thinks it is fake. Eventualy he is pulled over and they both spend the night in a dallas city jail. After getting out they get in a fight and the original character is knocked out by the "joint man".
He thinks he has killed him by accident so he dumps his cody in an abandoned auto yard. he wakes up in the back seat of an old clunker and is scared crapless by a goat in the car as well.
he then spends the rest of the movie trying to get home


is this a good idea at all?
sorry if it is bad.... :(
Update: this was a skelaton idea, i am a comedian and know the importance of comedy
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