Good suggestions here, but I would rather use a pump rather than suck out stuff that usually contains methanol, but smells like vomit. You might try an inexpensive bellows pump that is made to syphon fuel. It might take a trip to a hardware store for some smaller flexible tubing and some barbed adaptors to hook it up.
On second thought, a wet/dry vac might work well with some stout, but flexible tubing and some barbed adaptors or maybe some duct tape. That is where I would be going!