Anyone Elses Civic Leak Gas??????

ok

just bought my first Civic last night

its a 91 3 Door Hatchback DX

i filled it with gas before i brought it home (totally full) and then i parked it in my driveway

my driveway slants and the back of the car was towards the bottom of the hill

i noticed when i came outside there was a decent amount of fuel on the ground

i am thinking (hoping) this was because it was on a slant and because it was so full that it leaked out

anyone ever hear of this??

any ideas?

thanks