Drop Off A Few Friends At The Lake Edit Meaning

1.

To go take a crap/do #2/clean your colon/poop in the toilet/whatever other cliche term you want to call the expulsion of fecal matter out through your rear end as the final step of your body digesting the food you eat.

Oww, shit man it looks like I'm gonna miss part of the movie, 'cause I really need to go drop off a few friends at the lake!