Possible Clues:

• Dig this with your elbows
• Shove with the elbow
• How one might give a pointed reminder
• Gentle poke with elbow
• Glass initially embedded in exposed elbow
• A gentle reminder as debt-collector turns up
• That reminds me about the good tip: ''Artist's Model''
• Person without clothes should receive good poke
• Remind and turn up, say, to demand money
• Remind (with the elbow)