The discovery of a mysterious giant spider has given a farmer and his friend the fright of their lives.

The farmer had been removing ivy from the side of his home in Waingaro, 140km south of Auckland, which revealed the gigantic spider lurking beneath, according to Daily Mail.

WARNING: COARSE LANGUAGE

"F*** he's huge!", the man exclaimed several times on the spine-chilling yet hilarious video.

The mortified friend is so shocked at the stature of the unsuspected guest, his eyes appear to bulge out of their sockets.

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"I can't get over that, that's probably one of the biggest spiders I've seen. I've never seen a spider like that" the friend can be heard saying.

The video was shared to YouTube in March and has since racked up over 50,000 views.