How do you take it? (why is this so funny?)

[Tedwonny]

Tom Daley, a well-known Olympic medalist in the UK, came out not long ago and he was doing an interview:
"Tom Daley" On The Jonathan Ross Show Series 5 Ep 9 7 December 2013 Part 1/5 - YouTube

He mentioned an anecdote at 11:40 about 'cup of tea' and I don't really get why his uncle's reply 'how do you take it' is funny?

Could anyone please share?

 

[MikeNewYork]

Tom Daley, a well-known Olympic medalist in the UK, came out not long ago and he was doing an interview:
"Tom Daley" On The Jonathan Ross Show Series 5 Ep 9 7 December 2013 Part 1/5 - YouTube

He mentioned an anecdote at 11:40 about 'cup of tea' and I don't really get why his uncle's reply 'how do you take it' is funny?

Could anyone please share?

It appears to be a reference to something that happened earlier. I don't know what that was.