Ask him nicely

If no one else is going to say it.. Samefag.

perhaps someone had a speech defect, or some weird dialect, that would be how those names came up

tera

Cut this shit out, it wasn't funny the first time, it sure as hell won't be now

Not since the accident.

The name Jack probably originated as a medieval diminutive of the name John, originally as "Jackin" (earlier Jankin).[3][4] Alternatively it may be derived from the name Jacques, which is the French form of the name Jacob.[3] There is also a theory that it is Celtic in origin, meaning "Healthy, Strong, Full of Vital Energy" (compare the Welsh word iach, "health"), from a putative Ancient British *Jakkios.[5] Whatever its origin, the name and also the word "jack" were long used as a term to refer to any man, especially of the common classes.[2][6]