Where did Weird Al record “My Bologna?”

The answer is: In a bathroom. Weird Al recorded his parody of The Knack’s “My Sharona” while working at his university’s radio station. Using an extension cord, he took the studio microphone to a bathroom for the acoustics. Capitol Records released “My Bologna” as a single on Christmas Day of ‘79. The song is also on Weird Al’s debut album from 1983. Source