I've never had a boilermaker! But you may be interested to know.. son and I shared something called dragon soup... it was allegedly a high alc fruit based drink... it was awful... but I kinda liked the aftertaste :)
Haha. I think it's a different in the UK, so I have heard. Something similar to a black and tan if I'm not mistaken. Here it's a shot of whiskey dropped into a pint of beer.
Whatever that drink was it still had to be better than a gin and tonic.