I've had 4.5 litres of beer. that's roughly 7 pints...I think

LOL! Roughly more....

4.5 litres = 7.9 UK pints (practically a gallon) so no wonder your conversion is "roughly"!

I'd be well under the table before that amount... I've had my moments but I doubt I've ever managed that far.

(For the Americans here, it's 9.5 US pints.)

Roughly 9, more accurately 9.5. A pint is roughly a quart, or two pints. If you can drink that much and stll type, remind me not to challenge you to a contest.

That sounds like a lot of beer. I would feel sick if I drank that

But did you remember to put it on the wall?

Depending on the beer and the period of time it was consumed in, that could be great or a complete nightmare

That math isn’t mathing. Have 2 more liters and try your calculations again.

Budweiser?