nice one totx, for all of you who do not get it, sorry, I really can't figure out how to explain it without going nuts but basically...
A Spaniard goes into an English academy, knocks on the door and says:
"Hello, is this where one can learn English in only 5 days?"
And the teacher replies:
"If!, �If!, �Between!, Between!"
The teacher is trying to say "Yes, Yes, Come in, Come in!" and the play on words is that "S�" in Spanish with the accent on the "�" is is "Yes" and without the accent is "If" and "Between" translates to both "Entre" which means both "Between" and "Come in" in the usted form of the verb "Entrar" (formal command)
Hope that helped and I did not confuse you all even more
Saludos,
jer...