meaning in context - What does the phrase 'a punch above your weight' in the sentence ''Get a punch above your weight mug for your mother-in-law Helena''mean?

What does the phrase 'a punch above your weight' in the sentence ''Get a punch above your weight mug for your mother-in-law Helena''mean?

I have found in Urban Dictionary the following:

to punch above your weight means 'to pull or pick up someone who's better looking than you'.

After Urban Dictionary gives examples. One of these is the following:

Get a punch above your weight mug for your mother-in-law Helena.

What does the phrase 'a punch above your weight' mean in this example?