gobble the glue
When a woman gives head and swallows the load she is gobbling the glue.
When a man's getting his dick sucked from a woman who is unsure, hesitates, signals, or doesn't want to swallow. She should be told, 'gobble the glue'. Often times, the saying is lengthened by saying, 'gobble the glue' or I'll glue your eyes shut!