also: びっくりこいた
expression
that was a surprise; that was unexpected
Colloquial expression used when something surprising happens; often said to oneself or in informal conversation. Derived from びっくり (surprise) with the dialectal/emphatic こいた ending.
See also: びっくら
いきなり後ろから声をかけられて、びっくらこいた。
Someone suddenly called out from behind me, and that was a surprise.
テストの結果を見て、びっくらこいたよ。
I saw the test results and that was unexpected.