tought spot with jj three handed

[theDetroitKid]

No reads just sat down.
1/2 PL Holdem FTP
Hero and Villian are both 200 effective stacks.

From Button Hero opens for 7
SB folds, BB Raises to 20.
Hero calls.

Flop is 10c 4s 6d.
BB Bets 20.5 into 41 pot.
Hero?

Weak lead? or is he trying to induce me to raise?

help me with a plan in this hand.