Tying a few on may negatively affect your ability to successfully shoot one off.

Researchers have found that dudes who consume five or more drinks a week are at risk for reduced sperm quality, according to a study published in BMJ Open.

“Our study suggests that even modest habitual alcohol consumption of more than 5 units per week had adverse effects on semen quality, although most pronounced associations were seen in men who consumed more than 20 units per week,” the study authors wrote, adding that young men should be advised to avoid habitual alcohol intake.

And the more you drink, the worse off your semen is likely to be. The study found that guys who drank 40 or so drinks a week were found to have a 33 percent decrease in sperm count.

It should be noted that this information is probably not reason enough to declare that getting hammered is a suitable birth control method.