Acrylic painting and glue.?

okk. i was watching amish on break, and they went to this girls house and she was an artist. she did some acrylic paintings with glue and acrylic paint. and it looked like a map of a road like it was a continuous line like they just took the bottle of paint and squirted it on there... it was all over the canvas. but they did it with chop sticks. i was wondering how to do that. can somebody give me a website on how to do that or a picture or at least tell me what its called.? thanks.!!!