Turn off the main water supply for the irrigation system.
Dig a hole around the irrigation system pipes where the Funny Pipe and fittings will be installed. Ensure the hole is large enough to connect the Funny Pipe and fittings to the appropriate irrigation head or pipe.
Wipe away dirt from the irrigation pipe with a rag where the Funny Pipe will be installed.
Using a pipe cutter, cut the amount of Funny Pipe needed to go from the horizontal irrigation pipe to the location where irrigation is being added.
Screw the Funny Pipe fitting onto the fitting on the irrigation pipe.
Attach the Funny Pipe by pushing it onto its fitting. The Funny Pipe should cover the fitting's threads.