Meaning of some sentences!!!!

[zoobinshid]

Hello everybody,
Would you please tell me the meanig of these sentences?

1)It takes one to know one.
2)Does he have alot of one night stand?
3)Don`t cross picket line.
4)It escapes me.
5)Step on the gas.
6)Hasta la vista.

Thanks in advance,

[Tdol]

1 a person of a certain type can recognose another- a crook knows a crook
2 casual sexual encounters
3 the picket line is where strikers try to stop other workers entering- if you cross it, you are going against your workmates
4 I can't remember, or don't get it
5 accelerate, go faster
6 see you