Jerk

First of all: Normal Swedish parents would not use this name. Since more or less everyone speak English in Sweden people KNOW what it means.
And if there is anyone that has this name in Sweden, that person is probably 70+, since names like Jerk, Jerker, Sverker and other names that sounds like Jerk was only popular in the 1930-40s.
And actually, Jerker and Sverker is uncommon, but a lot more common than Jerk.

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So, all you non-Swedish people, don't get your hopes up. It is not likely that you'll ever meet a Jerk (or jerk) in Sweden. :)

In the United States, "jerk" refers to a person who is rude or mean. Culturally, it would never be accepted as a legitimate first name.