Two Piers, Two Friends: Not Twins?

[fleem]

There were two piers reaching over the Thames. On each pier I spied a different friend of mine, fishing. These two friends were born of the same mother on the same day of the same year, yet they are not twins. How is that possible?

 

[DavidSnider]

Triplets, Octuplets.

Edit: Sorry, a bit harsh before =)

 

[fleem]

Triplets, Octuplets.

Edit: Sorry, a bit harsh before =)

Wow you are fast :)