TROLL

(in folklore) an ugly creature depicted as either a giant or a dwarf

a person who makes a deliberately offensive or provocative online post

a line or bait used in trolling for fish.

make a deliberately offensive or provocative online post with the aim of upsetting someone or eliciting an angry response from them

carefully and systematically search an area for something

walk in a leisurely way; stroll

sing (something) in a happy and carefree way