Chuck somebody under the chin American informal
To Touch someone like children under their chin in a gentle way in order to show your love, and care
Please don't chuck me under the chin, I'm not a child.
'Merry Christmas' she said and chuked her son under chin.
I chucked my daughter under the chin because she was so lovely.
The verb "chuck" should be conjugated according to its tense.
There is no clear information about this expression, so the origin is not certain.
1. A pill or tablet that is hard for someone to swallow because of its large size
2. An fact, claim, proposal, etc. that is very difficult to believe or accept
1. The vet gave my adorable puppy a horse pill and he spat it out immediately.