What is a chunk?

[Greensleevevssnotnose]

https://www.linkedin.com/posts/rob-mayhew_just-doing-my-bit-for-dads-of-tiktok-chunk-activity-7050366376279994368-jZ2x?utm_source=share&utm_medium=member_android

Love this guy and follow him on LinkedIn but today's post has me puzzled. Seems to childcare related so thought I would ask here. What's a chunk?

A chubby baby?

Oh it says chunk of time. I assume just time spent with your child but given a special name by social media.

I don’t watch tik tok videos so this is just a guess.

Ok I get is so " will you look after child for an hour while I read the paper? And I'll do an hour this afternoon while you get a haircut? "

Seems very transactional