Somewhere along the way in my happy hour adventures, I learned this little rhyme:

One, two, feeling cool.
Three, four, just one more.
Five, six, gonna be sick.

I always thought it was a cute way to remind myself not to drink too much (and yes, five will do it; I am kind of a cheap date), but the trouble is I forget the rhyme before it's actually useful. But now there's a bottle opener that will do all the work for me:

[Urban Trend]

The beer-counting bottle opener won't tell you to stop drinking, but it will gently suggest that maybe you should, with surprisingly effective numeral-based passive aggressiveness. 

Related: Bottle Openers for Party Dudes, Happy Hour: Drink, Drank, Drunk