I must admit he worked that one out on his own !! I think its a beagle thing as most that i know do it ! Daisy we have taught it as shes a bit dozy lol ! but Alfie does it all the time ! Its his 'I'd like some attention now' pose,His 'Don't i look cute' (For visitors) pose.
His 'Isn't it walk time' and his 'Please let me on the sofa' pose ........its works every time needless to say lol !
He really has worked out that its cute and will get him 'everything',he'll sit like it for ten minutes or more if he needs too,he does do it on command if i say 'show me a Yay' or 'Yay',
I would imagine if you gota treat just above the girls noses when they do it to you,they may take theirs paws up and off your arm,this is how we taught Daisy,