This is not your typical in-law relationship.

When Katherine Karamasos went on a three-week trip to Australia, she asked her biotech project manager mother, Eva Harris, to "keep an eye on" her partner, Gabriel Cruz, a sushi chef and rapper.

Stream NBC10 Boston news for free, 24/7, wherever you are. WATCH HERE

Little did Karamasos imagine the adventures the pair would go on — and the TikTok fame they would achieve as a result.

"My daughter is out of town, so I'm taking my son-in-law to do 'old lady white people s---,'" Harris said in one of her viral videos in which the dynamic duo visit a farm petting zoo and do goat yoga. It has over 7 million views.

So Harris and Cruz decided to keep the adventures rolling.

“I had no idea it was going to go viral, but that’s exactly what hap

See Full Page