How do I solve 5 down in Daily Telegraph Cryptic 31244?

Question

Accepted Answer

5 down reads "Stupid boy allowed crumpet" (7 letters); the answer is PIKELET. It's a charade: the answer breaks into parts in clue order, each part clued by a word or short phrase. No indicators needed; watch for standard abbreviations (RA = artist, US = American, IN = at home) and short synonyms. The full step-by-step breakdown is on this page.

Stupid boy allowed crumpet (7)

5D — Stupid boy allowed crumpet (7) — PIKELET