Related Clues:

• Sticking (out)
• Piercing
• Attention-getting act
• Contacting via Facebook, in a way
• Jabbing a petty officer with a ruler
• Attacking with jabs is quite acceptable in ring
• Jabbing petty officer with ruler
• Reminding, in a way
• Giving a nudge to pig whose heart is moved by a distressed 'oink'