To make a hash of pre-match laying resulting in your back bet being unmatched at kick off.

Usual procedure is then to frantically try and lay in-play, usually at much worse odds, and then fingers crossed that the right result comes in to get you off the hook.

– “How did the DDHH go last night John?”

– ” yep, got out of jail again, backed when teams announced and he started dropping, then he drifted like buggery, big underlay.”