At which point He will ask you why you blasphemed Him by being baptized a second time.
I'm expecting more like "well done, good and faithful servant".
The Bible states, You must first believe then be baptised... How does an infant confess Christ? How do you know a child believes. Therefore, if one is baptised as an infant, it really is for naught, unless it is afor another spiritual purpose... and no, there isn't a Limbo, or Christ would have taught the baptising of babies, also there would have been record of babies with John the baptist.
There is only one unforgivable sin, that is blaspheming the Holy Ghost. Being baptisted when coming to the knowledge of Christ is not blaspheming.