Steve Urkel: [last lines of the series] Do I get a welcome home kiss?
Laura: On one condition.
Steve Urkel: What's that.
Laura: That you'll never go into outer space again
Steve Urkel: Only when we kiss, Laura Lee, only when we kiss
[they passionately kiss]

Steve Urkel: Laura, this is a... a really special moment and... well, I think we should celebrate it by... getting married.
Laura: No.
Steve Urkel: Engaged?
Laura: No.
Steve Urkel: Going steady?
Laura: No.
Steve Urkel: A date?
Laura: No.
Steve Urkel: A kiss?
Laura: No.
Steve Urkel: A handshake?
Laura: No.
Steve Urkel: I'll see ya tomorrow?
Laura: Yeah.
Steve Urkel: I'll take it.